35310 - Construction machinery (Miscellaneous)
35311 - Wheel tractors, Contractors' Off-highway 2- & 4-wheel, Rubber-tired dozers & Self-propelled
3531122 - - Wheel tractors, Off-highway 2- & 4-wheel: Single axle: <300 hp
3531124 - - Wheel tractors, Off-highway 2- & 4-wheel: Single axle: =>300 hp
3531126 - - Wheel tractors, Off-highway 2- & 4-wheel: Two axle: 150-299 hp
3531128 - - Wheel tractors, Off-highway 2- & 4-wheel: Two axle: =>300 hp
3531131 - - Wheel tractors, Off-highway 2- & 4-wheel: Two axle: <150 hp
3531133 - - Rubber-tired dozers: 125-299 maximum engine hp
3531135 - - Rubber-tired dozers: =>300 maximum engine hp
3531137 - - Wheeled log skidders, Self-propelled
35312 - Tracklaying tractors, =>20 net engine hp rating (except parts & Attachments)
3531211 - - Tracklaying tractors: 20-44 net engine hp
3531213 - - Tracklaying tractors: 45-59 net engine hp
3531215 - - Tracklaying tractors: 60-89 net engine hp
3531219 - - Tracklaying tractors: 90-124 net engine hp
3531221 - - Tracklaying tractors: 125-159 net engine hp
3531222 - - Tracklaying tractors: 160-259 net engine hp
3531224 - - Tracklaying tractors: 260-344 net engine hp
3531227 - - Tracklaying tractors: =>345 net engine hp
35313 - Parts & Attachments for Tracklaying tractors, Contractors' Off-highway wheel tractors & Tractor shovel loaders
35314 - Power cranes, Draglines & Shovels (Excavators) + Surface mining equipment & Parts & Attachments
3531403 - - Cranes: Locomotive (except wrecking)
3531405 - - Cranes: Full circle revolving with booms (Whirleys & Hammerheads)
3531407 - - Cranes (General + Locomotive wrecking cranes)
3531411 - - Excavators: Hydraulic: <40000 lb
3531413 - - Excavators: Hydraulic: 40000-55000 lb
3531415 - - Excavators: Hydraulic: 55000-70000 lb
3531417 - - Excavators: Hydraulic: 70000-85000 lb
3531419 - - Excavators: Hydraulic: 85000-100000 lb
3531420 - - Excavators: Hydraulic: 100000-30000 lb
3531422 - - Excavators: Hydraulic: >130000 lb
3531423 - - Excavators: Hydraulic: Truck or Wheel (Rubber) mounted, all sizes
3531425 - - Cranes: Cable: 120-150 tons
3531426 - - Cranes: Cable: >150 tons
3531430 - - Cranes: Hydraulic operated: Crawler mounted
3531431 - - Cranes: Truck mounted: =<20 tons
3531432 - - Cranes: Truck mounted: >20 - 30 tons
3531433 - - Cranes: Truck mounted: >30 - 55 tons
3531434 - - Cranes: Truck mounted: >55 tons
3531436 - - Cranes: Self-propelled: =<8 tons
3531437 - - Cranes: Self-propelled: >8 tons - 12.5 tons
3531438 - - Cranes: Self-propelled: >12.5 - 15 tons
3531439 - - Cranes: Self-propelled: >15 tons - 18 tons
3531440 - - Cranes: Self-propelled: >18 tons - 25 tons
3531441 - - Cranes: Self-propelled: >25 tons
3531453 - - Excavators: Cable: Truck or Wheel (Rubber) mounted, all capacities
3531454 - - Excavators: Cable: =<.75 cu yard
3531455 - - Excavators: Cable: .75 - 1.25 cu/yd
3531456 - - Excavators: Cable: 1.25 - 2 cu/yd
3531457 - - Excavators: Cable: 2 - 3.5 cu/yd
3531458 - - Excavators: Cable: 3.5 - 5 cu/yd
3531459 - - Excavators: Cable: 5 - 10 cu/yd
3531460 - - Excavators: Cable: 10 - 15 cu/yd
3531461 - - Excavators: Cable: >15 cu/yd
3531466 - - Cranes: Cable: =<15 tons
3531467 - - Cranes: Cable: 15-30 tons
3531468 - - Cranes: Cable: 30-45 tons
3531469 - - Cranes: Cable: 45-60 tons
3531470 - - Cranes: Cable: 60-75 tons
3531471 - - Cranes: Cable: 75-90 tons
3531472 - - Cranes: Cable: 90-120 tons
3531473 - - Cranes: Truck or Wheel: =<30 tons
3531474 - - Cranes: Truck or Wheel: >30-45 tons
3531475 - - Cranes: Truck or Wheel: >45-60 tons
3531476 - - Cranes: Truck or Wheel: >60-75 tons
3531477 - - Cranes: Truck or Wheel: >75-90 tons
3531478 - - Cranes: Truck or Wheel: >90-120 tons
3531479 - - Cranes: Truck or Wheel: >120-150 tons
3531480 - - Cranes: Truck or Wheel: >150 tons
3531481 - - Attachments for Power cranes, Draglines & Excavators: Magnet
3531482 - - Attachments for Power cranes, Draglines & Excavators: Log loader
3531483 - - Attachments for Power cranes, Draglines & Excavators: Shovel
3531484 - - Attachments for Power cranes, Draglines & Excavators: Hoe
3531485 - - Parts for Power cranes, Draglines & Shovels
3531487 - - Dragline buckets: =<40 cu/yd
3531488 - - Dragline buckets: >40 cu/yd - 60 cu/yd
3531489 - - Dragline buckets: >60 cu/yd
3531491 - - Dragline Clamshell/grapple
3531492 - - Dragline attachments
3531496 - - Cranes: Walking cranes & Draglines (+ Crawler mounted draglines): Capacity: =<40 cu/yd
3531497 - - Cranes: Walking cranes & Draglines (+ Crawler mounted draglines): Capacity: >40 cu/yd - 60 cu/yd
3531498 - - Cranes: Walking cranes & Draglines (+ Crawler mounted draglines): Capacity: >60 cu/yd
35316 - Mixers, Pavers & related equipment, excl parts
3531612 - - Concrete Mixers: Portable, <3.5 cu/yd capacity (except plaster & Mortar) hand or Power operated
3531613 - - Pavers, Self-propelled: <8500 lb gross wt.
3531614 - - Pavers, Self-propelled: 8500 lb - 19999 lb gross wt.
3531615 - - Pavers, Self-propelled: 20000 lb - 34999 lb gross wt.
3531616 - - Pavers, Self-propelled: =>35000 lb gross wt.
3531617 - - Concrete pumps: Trailer mounted: <25 cu/yd/hr.
3531618 - - Concrete pumps: Trailer mounted: =>25 cu/yd/hr.
3531619 - - Concrete pumps: Truck mounted: <50 cu/yd/hr.
3531620 - - Concrete pumps: Truck mounted: 50-100 cu/yd/hr
3531621 - - Concrete Mixers: Portable, =>3.5 cu/yd: Truck mixer or Agitator
3531623 - - Concrete pumps: Truck mounted: >100 cu/yd/hr.
3531625 - - Concrete Mixers: Portable, =>3.5 cu/yd: other than Truck mixer
3531631 - - Concrete Mixers: Portable, =>3.5 cu/yd: Plaster & Mortar, all sizes
3531632 - - Concrete slipform pavers
3531633 - - Concrete slipform curbers, Gutter & Sidewalk pavers
3531635 - - Concrete deck & Slab finishers
3531636 - - Concrete trowels
3531637 - - Concrete batching plants, Bin & Batch (For concrete aggregate only & Bulk cement)
3531640 - - Concrete vibrators (Electric motor, Gasoline engine, Structural high-cycle, Pneumatic, etc.)
3531641 - - Bituminous: Distributors
3531642 - - Concrete screeds (Hand-propelled or Winch type)
3531645 - - Central mixing plants: <2000 lb batch (<60 tph)
3531646 - - Central mixing plants: 2000-3500 lb batch (60-119 tph)
3531647 - - Central mixing plants: 3501-5500 lb batch (120-179 tph)
3531648 - - Central mixing plants: 5501-7500 lb batch (180-239 tph)
3531649 - - Central mixing plants: =>7501 lb batch (=>240 tph)
3531651 - - Asphalt boxes, not Self-propelled
3531654 - - Stablization mixing equipment: Central plants
3531655 - - Stablization mixing equipment: Mix-in-place
3531656 - - Pavement reclaimers/planers (Self-propelled): 0 - 24999 lb (Machine wt)
3531657 - - Pavement reclaimers/planers (Self-propelled): 25000 - 59999 lb (Machine wt)
3531658 - - Pavement reclaimers/planers (Self-propelled): =>60000 lb (Machine wt)
3531659 - - Concrete & Bituminous equipment (General) + Mixers, Heating kettles, Heaters, Circulators, etc.
35317 - Tractor shovel loaders, excl parts & Attachments
3531710 - - Wheel type tractor shovel loaders
3531711 - - Tracklaying tractor shovel loaders: 20-44 hp
3531713 - - Tracklaying tractor shovel loaders: 45-59 hp
3531715 - - Tracklaying tractor shovel loaders: 60-89 hp
3531719 - - Tracklaying tractor shovel loaders: 90-124 hp
3531720 - - Tractor shovel loaders: Tracklaying type (=>20 net engine hp.)
3531721 - - Tracklaying tractor shovel loaders: 125-159 hp
3531722 - - Tracklaying tractor shovel loaders: 160-259 hp
3531725 - - Tracklaying tractor shovel loaders: =>260 hp
3531730 - - Wheel tractor-chassis as part of Front engine mount, Integral design tractor shovel loader/backhoes (NEHP)
3531737 - - Wheel type tractor shovel loaders: 4-wd skid steer: <35 hp
3531739 - - Wheel type tractor shovel loaders: 4-wd skid steer: =>35 hp
3531741 - - Tractor shovel loaders: Wheel, Rear engine, Integral: 4-wd: <1 cu/yd bucket capacity
3531743 - - Tractor shovel loaders: Wheel, Rear engine, Integral: 4-wd: 1 - 1.5 cu/yd
3531745 - - Tractor shovel loaders: Wheel, Rear engine, Integral: 4-wd: 1.5 - 2 cu/yd
3531747 - - Tractor shovel loaders: Wheel, Rear engine, Integral: 4-wd: 2 - 2.5 cu/yd
3531749 - - Tractor shovel loaders: Wheel, Rear engine, Integral: 4-wd: 2.5 - <3.5 cu/yd
3531751 - - Tractor shovel loaders: Wheel, Rear engine, Integral: 4-wd: 3.5 - 5 cu/yd
3531753 - - Tractor shovel loaders: Wheel, Rear engine, Integral: 4-wd: 5 - 6.5 cu/yd
3531755 - - Tractor shovel loaders: Wheel, Rear engine, Integral: 4-wd: 6.5 - 10 cu/yd
3531757 - - Tractor shovel loaders: Wheel, Rear engine, Integral: 4-wd: 10 - 15 cu/yd
3531759 - - Tractor shovel loaders: Wheel, Rear engine, Integral: 4-wd: =>15 cu/yd
3531763 - - Tractor shovel loaders: Wheel, Rear engine, Integral: 2-wheel drive, all sizes
3531799 - - Tractor shovel loaders, excl parts & Attachments (Miscellaneous)
35318 - Scrapers, Graders, Rollers & Off-highway trucks & Coal haulers, Trailers & Wagons & Construction machinery
3531810 - - Scrapers bowls: Conventional (Dig, Carrying & Hauling) self-propelled, Nonelevating, 2-wheel type scrapper: <18 cu/yd struck
3531811 - - Scrapers bowls: Conventional (Dig, Carrying & Hauling) self-propelled, Nonelevating, 2-wheel type scrapper: =>18 cu/yd struck
3531817 - - Elevating scraper bowls (Dig, Carrying & Hauling) 2- & 4-wheel: 7-12 cu/yd heaped
3531818 - - Elevating scraper bowls (Dig, Carrying & Hauling) 2- & 4-wheel: 12-18 cu/yd heaped
3531820 - - Elevating scraper bowls (Dig, Carrying & Hauling) 2- & 4-wheel: 18-26 cu/yd heaped
3531822 - - Elevating scraper bowls (Dig, Carrying & Hauling) 2- & 4-wheel: =>26 cu/yd heaped
3531823 - - Motor graders & Light maintainers: <75 hp
3531824 - - Motor graders & Light maintainers: 75-114 hp
3531825 - - Motor graders & Light maintainers: 115-144 hp
3531827 - - Rollers self-propelled type: Static compaction: Smooth steel rollers: <3 tons
3531828 - - Motor graders & Light maintainers: 145-199 hp
3531829 - - Scraper bowls (General - Towed type) 2- & 4-wheel & other Scraper bowls (General)
3531830 - - Motor graders & Light maintainers: =>200 hp
3531832 - - Rollers self-propelled type: Static compaction: Smooth steel rollers: 4 tons (3 - 4.5 tons)
3531833 - - Rollers self-propelled type: Static compaction: Smooth steel rollers: 5 tons (4.5 - 7.5 tons)
3531838 - - Rollers self-propelled type: Static compaction: Smooth steel rollers: 8 tons (>7.5 tons)
3531840 - - Vibratory compaction equipment: Single drum & Double drum, One drum vibrating: <6 tons gross weight
3531841 - - Vibratory compaction equipment: Single drum & Double drum, One drum vibrating: =>6 tons gross weight
3531842 - - Rollers, Towed type: Pneumatic tire + Vibratory
3531843 - - Rollers self-propelled type: Multiple projection steel wheel rollers: Embankment
3531844 - - Vibratory compaction equipment: other Compactors (except hand-held)
3531845 - - Rollers self-propelled type: Multiple projection steel wheel rollers: Landfill
3531846 - - Vibratory compaction equipment: Double drum, Two drums vibrating: <8 tons gross weight
3531847 - - Vibratory compaction equipment: Double drum, Two drums vibrating: =>8 tons gross weight
3531849 - - Rollers, Towed type: Sheepsfoot & Bar type
3531851 - - Rollers self-propelled type: Pneumatic tired rollers: =<4000 lb. wheel load
3531852 - - Rollers self-propelled type: Pneumatic tired rollers: >4000 lb. - 8000 lb. wheel load
3531853 - - Off-highway trucks & Tractors: Rear dump, Load on back haulers: <30 tons capacity
3531854 - - Rollers self-propelled type: Pneumatic tired rollers: >8000 lb. wheel load
3531856 - - Rollers, Towed type: Vibratory, Single steel drum
3531859 - - Off-highway trucks & Tractors: Rear dump, Load on back haulers: 30-45 tons capacity
3531865 - - Off-highway trucks & Tractors: Rear dump, Load on back haulers: 45-70 tons capacity
3531869 - - Off-highway trucks & Tractors: Rear dump, Load on back haulers: 70-100 tons capacity
3531870 - - Off-highway trucks & Tractors: Rear dump, Load on back haulers: >100 tons capacity
3531871 - - Construction machinery for Mounting: Sidebooms or Pipe handlers: <30000 lb lift capacity
3531872 - - Construction machinery for Mounting: Sidebooms or Pipe handlers: 30000-110000 lb lift capacity
3531873 - - Construction machinery for Mounting: Sidebooms or Pipe handlers: >110000 lb lift capacity
3531877 - - Construction machinery for Mounting: Dozers for Crawlers & Wheel tractors, all sizes
3531878 - - Construction machinery for Mounting: Winches (Towing, Logging & Oil-field types)
3531879 - - Construction machinery for Mounting: Backhoes: <14ft digging depth
3531880 - - Construction machinery for Mounting: Backhoes: =>14ft digging depth
3531882 - - Construction machinery for Mounting: Front-end loaders (=>.375 cu/yd)
3531883 - - Construction machinery for Mounting: Logging arches
3531884 - - Off-highway trucks & Tractors: Integral self-powered side & Bottom dumps + Coal haulers (All sizes)
3531885 - - Off-highway truck, Rear dump chassis used as a tractor for Towing trailers: <600 gross hp
3531886 - - Off-highway truck, Rear dump chassis used as a tractor for Towing trailers: 600 gross hp - 899 gross hp
3531887 - - Construction machinery for Mounting: Rippers & Rooters, Heavy rear-mounted
3531888 - - Construction machinery for Mounting: Continuous ditching & Trenching attachments: Crawler, Vehicle mounted
3531889 - - Construction machinery for Mounting: Continuous ditching & Trenching attachments: Rubber-tired, Vehicle mounted
3531890 - - Construction machinery for Mounting: Fork lift attachments
3531891 - - Construction machinery for Mounting: all other Construction machinery for Mounting + Cranes, Cable power control units, Hydraulic power control units, etc.
3531892 - - Off-highway truck, Rear dump chassis used as a tractor for Towing trailers: =>900 gross hp
3531893 - - Truck-type tractor chassis (General) used for Log hauling, Oilfields, Desert & other Uses
3531894 - - Off-highway trailers & Wagons (End, Side & Bottom dump): <90 tons capacity
3531895 - - Off-highway trailers & Wagons (End, Side & Bottom dump): 90-129 tons capacity
3531896 - - Off-highway trailers & Wagons (End, Side & Bottom dump): =>130 tons capacity
35319 - Construction machinery & Equipment (General) + other Construction machinery parts
3531906 - - Commercial brush, Limb & Log chippers for Waste wood reduction
3531907 - - Log splitters
3531911 - - Dredging machinery, Hydraulic & other Types
3531914 - - Ladder-type digging element: <2000 lbs gross weight
3531915 - - Ladder-type digging element: 2000-4999 lbs gross weight
3531917 - - Ladder-type digging element: =>5000 lbs gross weight
3531918 - - Wheel-type digging element
3531920 - - Self-propelled continuous ditchers & Trenchers + Ladder & Wheel types (Integral units only)
3531921 - - Railway maintenance of Way equipment (Rail layers, Ballast spreaders, etc.) except rail cars
3531923 - - Horizontal & Vertical earth augers & Power post hole diggers, excl water well & Blast hole drills
3531925 - - Digger-derricks
3531927 - - Pile driving equipment + Air or Steam pile hammers, Diesel pile hammers, Impact pile extractors, etc.
3531941 - - Crushing plants: Gyratory (Cone)
3531942 - - Crushing plants: Impact
3531943 - - Crushing plants: Jaw
3531944 - - Crushing plants: Roll
3531945 - - Screening plants
3531946 - - Washing & other Plants
3531952 - - Winches + Winches for Marine use (excl winches for Mounting on wheel or Tracklaying tractors)
3531970 - - Portable crushing plants, Screening plants, Washing plants & Combination plants
3531972 - - Hand-held compaction equipment: Pneumatic
3531973 - - Hand-held compaction equipment: Hydraulic
3531975 - - Pavement breakers (Hand-held): Pneumatic
3531976 - - Pavement breakers (Hand-held): Hydraulic
3531982 - - Rotary snow blowers, except residential (+ Integral units & Attachments for Mounting)
3531984 - - Snow clearing attachments: sold to plants producing construction machinery & Equipment
3531985 - - Snow clearing attachments for Mounting on tractors or Trucks + V-shaped snow plows, Single blades & Wings
3531986 - - Snow clearing attachments for Replacement or Repair
3531997 - - Construction machinery (General) & Equipment, Complete units + Well point systems, Derricks, except oil & Gas
3531999 - - Construction machinery (Miscellaneous)
3531A - Contractors' Off-highway type, Wheel tractors
3531A13 - - Single axle contractors' Off-highway wheel tractors
3531A19 - - Contractors' Off-highway wheel tractors: Wheel tractors for use as towing unit, By horsepower rating (2- & 4-wheel): Two axle (incl 2- & 4-wheel drive): > 50 hp
3531A20 - - Two axle contractors' Off-highway wheel tractors, under 100 hp
3531A21 - - Contractors' Off-highway wheel tractors: Wheel tractors for use as towing unit, By horsepower rating (2- & 4-wheel): Two axle (incl 2- & 4-wheel drive): 50 to 100 hp
3531A22 - - Two axle contractors' Off-highway wheel tractors, 100 to 149 hp
3531A23 - - Contractors' Off-highway wheel tractors: Wheel tractors for use as towing unit, By horsepower rating (2- & 4-wheel): Two axle (incl 2- & 4-wheel drive): 100 to 150 hp
3531A24 - - Two axle contractors' Off-highway wheel tractors, 150 hp & over
3531A26 - - Contractors' Off-highway wheel tractors: Wheel tractors for use as towing unit, By horsepower rating (2- & 4-wheel): Two axle (incl 2- & 4-wheel drive): 150 to 299 hp
3531A28 - - Contractors' Off-highway wheel tractors: Wheel tractors for use as towing unit, By horsepower rating (2- & 4-wheel): Two axle (incl 2- & 4-wheel drive): 300 hp or more
3531A34 - - Contractors' Off-highway rubber-tired dozers, all sizes
3531A37 - - Contrators' Off-highway wheeled log skidders, Self-propelled
3531B - Crawler tractors
3531B30 - - Crawler tractors <60 nehp
3531B32 - - Crawler tractors (Net engine horsepower): Wheel cranes, One control station (Self-propelled, Rubber mounted): 60 to 69 nehp
3531B34 - - Crawler tractors (Net engine horsepower): Wheel cranes, One control station (Self-propelled, Rubber mounted): 70 to 89 nehp
3531B36 - - Crawler tractors, 90 to 159 nehp
3531B38 - - Crawler tractors (Net engine horsepower): Wheel cranes, One control station (Self-propelled, Rubber mounted): 125 to 159 nehp
3531B40 - - Crawler tractors, 160 nehp & over
3531B42 - - Crawler tractors (Net engine horsepower): Wheel cranes, One control station (Self-propelled, Rubber mounted): 260 to 344 nehp
3531B44 - - Crawler tractors (Net engine horsepower): Wheel cranes, One control station (Self-propelled, Rubber mounted): 345 nehp or more
3531C - Tractor shovel loaders
3531C60 - - Skid steer tractor shovel loaders, 4-wheel drive
3531C61 - - Tractor shovel loaders: Wheel loaders, Rear engine mount, Integral design: 4-wheel drive, Nonskid steer (Nehp): > 60 nehp
3531C62 - - Tractor shovel loaders: Wheel loaders, Rear engine mount, Integral design: 4-wheel drive, Nonskid steer (Nehp): Wheel cranes, One control station (Self-propelled, Rubber mounted): 60 to 79 nehp
3531C63 - - Tractor shovel loaders: Wheel loaders, Rear engine mount, Integral design: 4-wheel drive, Nonskid steer (Nehp): Wheel cranes, One control station (Self-propelled, Rubber mounted): 80 to 99 nehp
3531C64 - - Tractor shovel loaders: Wheel loaders, Rear engine mount, Integral design: 4-wheel drive, Nonskid steer (Nehp): Wheel cranes, One control station (Self-propelled, Rubber mounted): 100 to 119 nehp
3531C65 - - Tractor shovel loaders: Wheel loaders, Rear engine mount, Integral design: 4-wheel drive, Nonskid steer (Nehp): Wheel cranes, One control station (Self-propelled, Rubber mounted): 120 to 149 nehp
3531C66 - - Tractor shovel loaders: Wheel loaders, Rear engine mount, Integral design: 4-wheel drive, Nonskid steer (Nehp): Wheel cranes, One control station (Self-propelled, Rubber mounted): 150 to 199 nehp
3531C67 - - Tractor shovel loaders: Wheel loaders, Rear engine mount, Integral design: 4-wheel drive, Nonskid steer (Nehp): Wheel cranes, One control station (Self-propelled, Rubber mounted): 200 to 249 nehp
3531C68 - - Tractor shovel loaders: Wheel loaders, Rear engine mount, Integral design: 4-wheel drive, Nonskid steer (Nehp): Wheel cranes, One control station (Self-propelled, Rubber mounted): 250 to 299 nehp
3531C69 - - Tractor shovel loaders: Wheel loaders, Rear engine mount, Integral design: 4-wheel drive, Nonskid steer (Nehp): Wheel cranes, One control station (Self-propelled, Rubber mounted): 300 to 499 nehp
3531C70 - - Tractor shovel loaders: Wheel loaders, Rear engine mount, Integral design: 4-wheel drive, Nonskid steer (Nehp): Wheel cranes, One control station (Self-propelled, Rubber mounted): 500 nehp or more
3531C71 - - Tractor wheel shovel loaders, Rear engine mount, Integral design, Nonskid steer, 4-wheel drive, under 79 nehp
3531C72 - - Tractor wheel shovel loaders, Rear engine mount, Integral design, Nonskid steer, 4-wheel drive, 80 to 149 nehp
3531C73 - - Tractor wheel shovel loaders, Rear engine mount, Integral design, Nonskid steer, 4-wheel drive, 150 to 249 nehp
3531C74 - - Tractor wheel shovel loaders, Rear engine mount, Integral design, Nonskid steer, 4-wheel drive, 250 nehp & over
3531C81 - - Tractor crawler shovel loaders, under 89 nehp
3531C82 - - Tractor shovel loaders: Crawler loaders (Net engine horsepower): Wheel cranes, One control station (Self-propelled, Rubber mounted): 60 to 69 nehp
3531C83 - - Tractor shovel loaders: Crawler loaders (Net engine horsepower): Wheel cranes, One control station (Self-propelled, Rubber mounted): 70 to 89 nehp
3531C84 - - Tractor crawler shovel loaders, 90 nehp or over
3531C85 - - Tractor shovel loaders: Crawler loaders (Net engine horsepower): Wheel cranes, One control station (Self-propelled, Rubber mounted): 125 to 159 nehp
3531C86 - - Tractor shovel loaders: Crawler loaders (Net engine horsepower): Wheel cranes, One control station (Self-propelled, Rubber mounted): 160 nehp or more
3531C95 - - Wheel cranes, One control station (Self-propelled, Rubber mounted): Wheel tractor-chassis shipped as part of Front engine mount, Integral design tractor shovel loader/backhoes (Nehp)
3531E - Power cranes, Draglines & Shovels
3531E01 - - Excavators: Crawler mounted: Rated shovel capacity: 15 cu yd or less
3531E02 - - Excavators: Crawler mounted: Rated shovel capacity: >15 cu yd
3531E03 - - Power excavators, Cable operated, Crawler-mounted
3531E05 - - Power excavators, Hydraulic-operated, Crawler-mounted, 24 metric tons & less rated size
3531E06 - - Power excavators, Hydraulic-operated, Crawler-mounted, over 24 metric tons to 40 metric tons rated size
3531E07 - - Power excavators, Hydraulic-operated, Crawler-mounted, over 40 metric tons rated size
3531E11 - - Excavators: Hydraulic operated: Crawler mounted: > & incl 19 metric tons
3531E12 - - Excavators: Hydraulic operated: Crawler mounted: >19 up to & incl 24 metric tons
3531E13 - - Excavators: Hydraulic operated: Crawler mounted: >24 up to & incl 33 metric tons
3531E14 - - Excavators: Hydraulic operated: Crawler mounted: >33 up to & incl 40 metric tons
3531E15 - - Excavators: Hydraulic operated: Crawler mounted: >40 up to & incl 50 metric tons
3531E16 - - Excavators: Hydraulic operated: Crawler mounted: >50 up to & incl 66 metric tons
3531E17 - - Excavators: Hydraulic operated: Crawler mounted: >66 up to & incl 90 metric tons
3531E18 - - Excavators: Hydraulic operated: Crawler mounted: >90 metric tons
3531E19 - - Power excavators, Hydraulic-operated, Wheel (Rubber) mounted, all sizes
3531E20 - - Cranes, Lattice boom, Crawler mounted, up to 90 tons maximum working load
3531E21 - - Cranes: Lattice boom: Crawler mounted: 30 tons or less
3531E22 - - Cranes: Lattice boom: Crawler mounted: >30 tons up to & incl 45 tons
3531E23 - - Cranes: Lattice boom: Crawler mounted: >45 tons up to & incl 60 tons
3531E24 - - Cranes: Lattice boom: Crawler mounted: >60 tons up to & incl 75 tons
3531E25 - - Cranes: Lattice boom: Crawler mounted: >75 tons up to & incl 90 tons
3531E26 - - Cranes, Lattice boom, Crawler mounted, >90 tons up to & incl 120 tons maximum working load
3531E27 - - Cranes: Lattice boom: Crawler mounted: >120 tons up to & incl 150 tons
3531E28 - - Cranes: Lattice boom: Crawler mounted: >150 tons
3531E29 - - Cranes, Lattice boom, Crawler mounted, over 120 tons maximum working load
3531E31 - - Cranes: Lattice boom: Wheel (Rubber) mounted: 45 tons or less
3531E32 - - Cranes: Lattice boom: Wheel (Rubber) mounted: >45 tons up to & incl 60 tons
3531E33 - - Cranes: Lattice boom: Wheel (Rubber) mounted: >60 tons up to & incl 75 tons
3531E34 - - Cranes: Lattice boom: Wheel (Rubber) mounted: >75 tons up to & incl 120 tons
3531E35 - - Cranes: Lattice boom: Wheel (Rubber) mounted: >120 tons up to & incl 150 tons
3531E36 - - Cranes: Lattice boom: Wheel (Rubber) mounted: >150 tons
3531E37 - - Cranes, Lattice boom, Wheel (Rubber) mounted, 120 tons & less maximum working load
3531E38 - - Cranes, Lattice boom, Wheel (Rubber) mounted, over 120 tons maximum working load
3531E41 - - Cranes, Hydraulic-operated, Telescoping boom, Crawler-mounted
3531E51 - - Cranes, Hydraulic-operated, Telescoping boom, Wheel (Rubber) mounted, Multiple control stations, 20 tons or less
3531E52 - - Cranes, Hydraulic-operated, Telescoping boom, Wheel (Rubber) mounted, Multiple control stations, >20 tons up to & incl 30 tons
3531E53 - - Cranes, Hydraulic-operated, Telescoping boom, Wheel (Rubber) mounted, Multiple control stations, >30 tons up to & incl 55 tons
3531E54 - - Cranes, Hydraulic-operated, Telescoping boom, Wheel (Rubber) mounted, Multiple control stations, >55 tons
3531E55 - - Cranes: Hydraulic operated, Telescopic boom: Pinned on type: Telescopic
3531E56 - - Cranes: Hydraulic operated, Telescopic boom: Pinned on type: Articulated
3531E57 - - Cranes, Hydraulic, Pinned-on type, Telescopic & Articulated
3531E61 - - Cranes: Hydraulic operated, Telescopic boom: Wheel cranes, One control station (Self-propelled, Rubber mounted): 8 tons or less
3531E62 - - Cranes: Hydraulic operated, Telescopic boom: Wheel cranes, One control station (Self-propelled, Rubber mounted): >8 tons up to incl 12 1/2 tons
3531E63 - - Cranes: Hydraulic operated, Telescopic boom: Wheel cranes, One control station (Self-propelled, Rubber mounted): >12 1/2 tons up to & incl 15 tons
3531E64 - - Cranes: Hydraulic operated, Telescopic boom: Wheel cranes, One control station (Self-propelled, Rubber mounted): >15 tons up to & incl 18 tons
3531E65 - - Cranes, Wheel (Rubber) mounted, One control station, Self-propelled, >18 tons up to & incl 25 tons
3531E66 - - Cranes, Wheel (Rubber) mounted, One control station, Self-propelled, over 25 tons
3531E67 - - Cranes: Hydraulic operated, Telescopic boom: Wheel cranes, One control station (Self-propelled, Rubber mounted): >40 tons
3531E68 - - Cranes, Wheel (Rubber) mounted, One control station, Self-propelled, up to & incl 18 tons
3531E71 - - Draglines, Crawler and/or Tub: Rated bucket capacity: 15 cu yd or less
3531E72 - - Draglines, Crawler and/or Tub: Rated bucket capacity: >15 cu yd up to & incl 25 cu yd
3531E73 - - Draglines, Crawler and/or Tub: Rated bucket capacity: >25 cu yd up to & incl 40 cu yd
3531E74 - - Draglines, Crawler and/or Tub: Rated bucket capacity: >40 cu yd
3531E75 - - Draglines (Crawler and/or Tub)
3531E81 - - Locomotive cranes (except wrecking)
3531E82 - - Pedestal or Shipboard mounted marine cranes, Telescopic or Box boom
3531E83 - - Other Cranes: Pedestal or Shipmounted marine cranes: Lattice boom <200 ton capacity
3531E84 - - Other Cranes: Pedestal or Shipmounted marine cranes: Lattice boom >200 ton capacity
3531E85 - - All other Cranes, incl Locomotive wrecking
3531E86 - - Pedestal or Shipmounted marine cranes, Lattice boom
3531E91 - - Attachments for Power cranes, Draglines & Excavators (sold separately): Magnet
3531E92 - - Attachments for Power cranes, Draglines & Excavators (sold separately): Log loader
3531E93 - - Attachments for Power cranes, Draglines & Excavators (sold separately): Shovel
3531E94 - - Hoe attachments for Power cranes, Draglines & Excavators (sold separately)
3531E95 - - Dragline buckets/rated bucket capacity (All sizes) for Power cranes, Draglines & Excavators
3531E96 - - Attachments for Power cranes, Draglines & Excavators (sold separately): Capacity enhancing lift attachments
3531E97 - - Clamshell/grapple attachments for Power cranes, Draglines & Excavators
3531E98 - - All other Attachments for Power cranes, Draglines & Excavators
3531F - Mixers, Pavers & related equipment (excl parts)
3531F21 - - Portable truck concrete mixers or Agitators, all sizes
3531F25 - - Portable concrete mixers, other than Truck, all sizes
3531F31 - - Plaster & Mortar mixers, all sizes
3531F32 - - Mixers, Pavers & related equipment: Concrete: Concrete pavers: Multipurpose slipform machines (Barrier/parapet/pavers <=12 ft wide)
3531F33 - - Automated slipform curb & Gutter concrete paver machines
3531F34 - - Nonautomated (Extruder) concrete curbers & Concrete placer spreaders
3531F35 - - Mixers, Pavers & related equipment: Concrete: Concrete pavers: Concrete slipform pavers (>12 ft up to andincl 34 ft wide)
3531F37 - - Mixers, Pavers & related equipment: Concrete: Concrete pavers: Nonautomated (Extruder) curbers
3531F38 - - Mixers, Pavers & related equipment: Concrete: Concrete pavers: Concrete placer spreaders
3531F39 - - Concrete trowels
3531F40 - - Concrete vibrators (Electric motor, Gasoline engine, Structural high cycle, Pneumatic, etc.)
3531F42 - - Concrete screeds (Hand-propelled or Winch-type)
3531F43 - - Concrete batching plants, Bin & Batch (For concrete aggregate only & Bulk cement)
3531F60 - - Trailer mounted mobile concrete pumps, <25 cu yd per hr
3531F62 - - Trailer mounted mobile concrete pumps, 25 cu yd per hr or more
3531F64 - - Truck mounted mobile concrete pumps (incl Value of Booms & Trucks) all sizes
3531F66 - - Bituminous distributors
3531F68 - - Mixers, Pavers & related equipment: Bituminous: Pavers, Self-propelled: > 8500 lb gross weight (Basic unit)
3531F70 - - Mixers, Pavers & related equipment: Bituminous: Pavers, Self-propelled: 8500 - 14999 lb gross weight (Basic unit)
3531F71 - - Self-propelled bituminous pavers, 21999 lb gross weight or less (Basic unit)
3531F72 - - Mixers, Pavers & related equipment: Bituminous: Pavers, Self-propelled: 15000 - 21999 lb gross weight (Basic unit)
3531F74 - - Mixers, Pavers & related equipment: Bituminous: Pavers, Self-propelled: 22000 - 26999 lb gross weight (Basic unit)
3531F75 - - Self-propelled bituminous pavers, 22000 lb gross weight or more (Basic unit)
3531F76 - - Mixers, Pavers & related equipment: Bituminous: Pavers, Self-propelled: 27000 - 33999 lb gross weight (Basic unit)
3531F78 - - Mixers, Pavers & related equipment: Bituminous: Pavers, Self-propelled: 34000 lb or more gross weight (Basic unit)
3531F80 - - Bituminous pavers, not Self-propelled
3531F82 - - Bituminous asphalt plants, <7500 lb (239 tons per hour)
3531F84 - - Bituminous asphalt plants, 7500 lb or more (240 tons per hour or more)
3531F85 - - Bituminous stabilization mixing equipment
3531F86 - - Mixers, Pavers & related equipment: Bituminous: Stabilization mixing equipment: Central mixing plants (Batch-type & Continuous-type) tons per hour (Tph): Central plants
3531F87 - - Mixers, Pavers & related equipment: Bituminous: Stabilization mixing equipment: Central mixing plants (Batch-type & Continuous-type) tons per hour (Tph): Mix-in-place
3531F88 - - Bituminous: Cold planers/milling machines (Self-propelled - Cutting width of Drum in inches): > 26 inches
3531F89 - - Bituminous cold planers/milling machines (Self-propelled)
3531F90 - - Bituminous: Cold planers/milling machines (Self-propelled Cutting width of Drum in inches): 26 inches to 49 inches
3531F92 - - Bituminous: Cold planers/milling machines (Self-propelled Cutting width of Drum in inches): 50 inches to 71 inches
3531F94 - - Bituminous: Cold planers/milling machines (Self-propelled Cutting width of Drum in inches): 72 inches to 85 inches
3531F96 - - Bituminous: Cold planers/milling machines (Self-propelled Cutting width of Drum in inches): >85 inches
3531F98 - - Concrete & Bituminous equipment, general, incl Mixers, etc.
3531G - Scrapers, Graders, Rollers & Off-highway trucks
3531G01 - - Conventional scraper bowls only (Digging, Carrying & Hauling)
3531G03 - - Elevating scraper bowls (Digging, Carrying & Hauling, 2- & 4-wheel type)
3531G05 - - All other Scraper bowls
3531G11 - - Motor graders & Light maintainers, under 144 nehp
3531G13 - - Motor graders & Light maintainers: 75 to 129 nehp
3531G15 - - Motor graders & Light maintainers: 130 to 144 nehp
3531G17 - - Motor graders & Light maintainers, 145 nehp & over
3531G18 - - Motor graders & Light maintainers: 170 to 199 nehp
3531G19 - - Motor graders & Light maintainers: 200 nehp or more
3531G21 - - Smooth steel wheel tandem rollers, Self-propelled/ride-on type, Static compaction, <3 metric tons
3531G23 - - Smooth steel wheel tandem rollers, Self-propelled/ride-on type, Static compaction, 3 - 5.5 metric tons
3531G25 - - Static compaction equipment (Fully ballasted): 5.5 - 9 metric tons
3531G26 - - Smooth steel wheel tandem rollers, Self-propelled/ride-on type, Static compaction, 5.5 metric tons & over
3531G27 - - Static compaction equipment (Fully ballasted): 9 metric tons or more
3531G29 - - Pneumatic tire rollers, Self-propelled/ride-on type, Static compaction, <2.5 metric tons
3531G31 - - Pneumatic tire rollers, Self-propelled/ride-on type, Static compaction, 2.5 metric tons or more
3531G33 - - Multiple projection steel wheel embankment rollers, Self-propelled/ride-on type, Static compaction
3531G35 - - Multiple projection steel wheel landfill rollers, Self-propelled/ride-on type, Static compaction
3531G37 - - Single drum rollers & Compactors with one or Two wheels, Self-propelled/ride-on type, Vibratory compaction, <5 metric tons
3531G39 - - Single drum rollers & Compactors with one or Two wheels, Self-propelled/ride-on type, Vibratory compaction, 5 - 8 metric tons
3531G41 - - Vibratory compaction equipment (without ballast): 8 - 12 metric tons
3531G42 - - Single drum rollers & Compactors with one or Two wheels, Self-propelled/ride-on type, Vibratory compaction, 8 metric tons & over
3531G43 - - Vibratory compaction equipment (without ballast): 12 metric tons or more
3531G45 - - Double drum rollers & Compactors with two drums vibrating, Self-propelled/ride-on type, <3 metric tons
3531G47 - - Double drum rollers & Compactors with two drums vibrating, Self-propelled/ride-on type, 3 - 5 metric tons
3531G49 - - Double drum rollers & Compactors with two drums vibrating, Self-propelled/ride-on type, 5 - 8 metric tons
3531G51 - - Double drum rollers & Compactors with two drums vibrating, Self-propelled/ride-on type, 8 - 11.3 metric tons
3531G53 - - Double drum rollers & Compactors with two drums vibrating, Self-propelled/ride-on type, 11.3 metric tons or more
3531G55 - - Double drum rollers & Compactors with 1 drum vibrating, Self-propelled/ride-on type, all sizes
3531G57 - - Other Rollers & Compactors (except handheld)
3531G59 - - Rollers, Towed type: Pneumatic tire, incl Vibratory
3531G61 - - Rollers, Towed type: Static-padfoot, Sheepsfoot & Bar type
3531G63 - - Rollers, Towed type: Vibratory-smooth, Padfoot & Sheepsfoot drums
3531G71 - - Off-highway rear dump haulers, all sizes
3531G73 - - Integral off-highway self-powered side & Bottom dump vehicles, incl Coal haulers
3531G75 - - Truck-type off-highway vehicles, Rear dump chassis used as a tractor for Towing earth, Rock, Coal & Ore trailers
3531G77 - - Other Off-highway truck-type tractor chassis, used for Log hauling, Oilfields, Desert & other Uses
3531G79 - - Off-highway trailers & Wagons (End, Side & Bottom dump) all sizes
3531G81 - - 2-wheel drive rough terrain forklifts, Vertical mast
3531G83 - - 4-wheel drive rough terrain forklifts, Vertical mast
3531G85 - - 2- & 4-wheel drive rough terrain forklifts, Variable reach
3531G91 - - Rollers, Towed-type
3531H - Construction machinery for Mounting on tractors & other Equipment
3531H39 - - Construction machinery for Mounting on tractors & other Prime movers: Vibratory compaction equipment (without ballast): Sidebooms or Pipehandlers (Lb lift capacity) all sizes
3531H40 - - Construction machinery for Mounting on tractors & other Prime movers: Vibratory compaction equipment (without ballast): Dozers, for Crawler & Wheel tractors, all sizes
3531H41 - - Construction machinery for Mounting on tractors & other Prime movers: Vibratory compaction equipment (without ballast): Winches (Towing, Logging & Oil-field types)
3531H42 - - Construction machinery for Mounting on tractors & other Prime movers: Backhoes: Vibratory compaction equipment (without ballast): > 14 ft digging depth
3531H43 - - Construction machinery for Mounting on tractors & other Prime movers: Backhoes: Vibratory compaction equipment (without ballast): 14 ft digging depth or more
3531H44 - - Construction machinery for Mounting on tractors & other Prime movers: Vibratory compaction equipment (without ballast): Front-end loaders, 3/8 cu yd or more, incl Shovel loaders
3531H45 - - Construction machinery for Mounting on tractors & other Prime movers: Vibratory compaction equipment (without ballast): Logging arches
3531H46 - - Construction machinery for Mounting on tractors & other Prime movers: Vibratory compaction equipment (without ballast): Rippers & Rooters, Heavy rear-mounted
3531H47 - - Construction machinery for Mounting on tractors & other Prime movers: Crawler & Rubber-tired, Vehicle mounted, Continuous ditching & Trenching attachments
3531H48 - - Construction machinery for Mounting on tractors & other Prime movers: Vibratory compaction equipment (without ballast): Fork lift attachments (incl only fork lift mast sold separately)
3531H49 - - Construction machinery for Mounting on tractors & other Prime movers: all other Construction machinery for Mounting, incl Cranes, Cable power control units, Hydraulic powercontrol units, etc.
3531H99 - - Construction machinery for Mounting on tractors & other Prime movers (excl parts)
3531K - Construction machinery (General)
3531K06 - - Commercial brush, Limb & Log chippers for Waste wood reduction
3531K07 - - Log splitters
3531K11 - - Dredging machinery, Hydraulic & other Types
3531K14 - - Self-propelled continuous ditchers & Trenchers (Integral units only): Ladder-type digging element: Vibratory compaction equipment (without ballast): > 2000 lb gross weight
3531K15 - - Self-propelled continuous ditchers & Trenchers (Integral units only): Ladder-type digging element: Vibratory compaction equipment (without ballast): 2000 to 4999 lb gross weight
3531K16 - - Self-propelled continuous ditchers & Trenchers (Integral units only): Ladder-type digging element: Vibratory compaction equipment (without ballast): 5000 lb gross weight or more
3531K18 - - Self-propelled continuous ditchers & Trenchers (Integral units only): Vibratory compaction equipment (without ballast): Wheel-type digging element
3531K20 - - Self-propelled continuous ditchers & Trenchers (Integral units only)
3531K21 - - Railway maintenance of Way equipment (Rail layers, Ballast spreaders, etc.) except rail cars
3531K22 - - Vertical earth augers & Power post hole diggers, excl water well & Blast hole drills
3531K24 - - Horizontal earth boring machines & Accessories
3531K25 - - Digger-derricks
3531K27 - - Pile driving equipment, incl Air or Steam pile hammers, Diesel pile hammers, Impact pile extractors & Vibratory driver extractors
3531K41 - - Portable Crushing plants: Gyratory (Cone)
3531K42 - - Portable Crushing plants: Impact
3531K43 - - Portable Crushing plants: Jaw
3531K44 - - Portable Crushing plants: Roll
3531K45 - - Portable Screening plants
3531K46 - - Portable Washing & other Plants
3531K53 - - Electric winches, incl Winches for Marine use (excl winches for Mounting on wheel or Crawler tractors)
3531K55 - - Other Winches, incl Winches for Marine use (excl winches for Mounting on wheel or Crawler tractors)
3531K61 - - Automobile hoists (Used on tow trucks)
3531K70 - - Portable crushing plants, Screening plants, Washing plants & Combination plants
3531K74 - - Handheld compaction equipment (incl Tampers, Upright & Vibratory compactors)
3531K77 - - Handheld pavement breakers
3531K81 - - Aerial work platforms: Boom type, Self-propelled
3531K82 - - Rotary snow blowers, except residential (incl Integral units & Attachments for Mounting)
3531K83 - - Aerial work platforms: Scissors, Self propelled
3531K85 - - Aerial work platforms: not Self-propelled, Boom & Scissors type
3531K87 - - Aerial work platforms: Truck mounted
3531K90 - - Aerial work platforms
3531K97 - - All other Construction machinery & Equipment, Complete units, incl Well point systems, Derricks, except oil & Gas well, incl Gallows, Frames, Ginpole, Stiff legs & Guy
3531K99 - - Other Construction machinery & Equipment (excl parts) (Miscellaneous)
3531M - Parts for Construction machinery & Equipment
3531M01 - - Parts for Contractors' Off-highway wheel tractors, Crawler tractors & Tractor shovel loaders (sold separately)
3531M03 - - Parts for Power cranes, Draglines & Shovels (Excavators, incl Surface mining equipment, sold separately)
3531M05 - - Parts for Mixers, Pavers & related equipment (sold separately)
3531M07 - - Parts for Scrapers, Graders, Rollers, Off-highway trucks & Coal haulers, Trailers, Wagons, Rough terrain forklifts (sold separately)
3531M08 - - Parts for Construction machinery for Mounting on tractors & other Prime movers (sold separately)
3531M09 - - Parts for Construction machinery for Mounting on tractors & other Prime movers
3531M15 - - Parts for other Construction machinery & Equipment (except for Tractors, Power cranes, Draglines, Shovels, Mixers, Pavers & related paving equipment, Scrapers, Graders, Rollers, Off-highway truck
3531M21 - - Parts for other Construction machinery & Equipment (sold separately)
3531M99 - - Parts for Construction machinery & Equipment, sold separately (Miscellaneous)
3531N - Construction machinery for Mounting on tractors & other Prime movers (excl parts & Snow clearing attachments)
3531N01 - - Sidebooms or Pipehandlers for Mounting on tractors & other Prime movers, all sizes
3531N03 - - Dozers for Mounting on crawler & Wheel tractors, all sizes
3531N05 - - Electric winches (Towing, Logging & Oilfield types) for Mounting on tractors & other Prime movers
3531N07 - - Other Winches, incl Hydraulic (Towing, Logging & Oilfield types) for Mounting on tractors & other Prime movers
3531N09 - - Backhoes with <14 ft digging depth for Mounting on tractors & other Prime movers
3531N11 - - Backhoes with 14 ft digging depth or more for Mounting on tractors & other Prime movers
3531N13 - - Front-end loaders, 3/8 cu yd or more, incl Shovel loaders, for Mounting on tractors & other Prime movers
3531N15 - - Logging arches for Mounting on tractors & other Prime movers
3531N17 - - Rippers & Rooters, Heavy rear-mounted, for Mounting on tractors & other Prime movers
3531N19 - - Continuous ditching & Trenching attachments, Crawler & Rubber-tired, for Mounting on tractors & other Prime movers
3531N21 - - Fork lift attachments, incl only fork lift masts sold separately, for Mounting on tractors & other Prime movers
3531N23 - - All other Construction machinery for Mounting on tractors & other Prime movers, incl Cranes, Cable power-control units, etc.
3531P - Other Construction machinery & Equipment (excl parts)
3531P06 - - Commercial brush, Limb & Log chippers for Waste wood reduction (excl parts)
3531P07 - - Log splitters (excl parts)
3531P11 - - Dredging machinery, Hydraulic & other Types (excl parts)
3531P14 - - Ladder-type self-propelled continuous ditchers & Trenchers, <2000 lb gross weight
3531P15 - - Ladder-type self-propelled continuous ditchers & Trenchers, 2000 to 4999 lb gross weight
3531P16 - - Ladder-type self-propelled continuous ditchers & Trenchers, 5000 lb gross weight or more
3531P18 - - Wheel-type self-propelled continuous ditchers & Trenchers
3531P20 - - Self-propelled continuous ditchers & Trenchers, incl Ladder & Wheel types (Integral units only - excl parts)
3531P21 - - Railway maintenance of Way equipment (Rail layers, Ballast spreaders, etc.) except rail cars (excl parts)
3531P22 - - Vertical earth augers & Power posthole diggers, excl water well & Blasthole drills (excl parts)
3531P24 - - Horizontal earth boring machines & Accessories (excl parts)
3531P25 - - Digger-derricks (excl parts)
3531P27 - - Pile driving equipment (incl Air, Steam, or Diesel pile hammers & Impact pile or Vibratory driver extractors - excl parts)
3531P41 - - Portable gyratory (Cone) crushing plants
3531P42 - - Portable impact crushing plants
3531P43 - - Portable jaw crushing plants
3531P44 - - Portable roll crushing plants
3531P45 - - Portable screening plants
3531P46 - - Portable washing & Combination plants
3531P53 - - Electric winches, incl Marine use (excl winches for Tractor mounting & Parts)
3531P55 - - Other Winches, incl Marine use (excl winches for Tractor mounting & Parts)
3531P61 - - Automobile hoists (Used on tow trucks - excl parts)
3531P70 - - Portable crushing, Screening, Washing & Combination plants
3531P74 - - Handheld compaction equipment (incl Tampers, Upright & Vibratory compactors - excl parts)
3531P77 - - Handheld pavement breakers (excl parts)
3531P81 - - Boom-type aerial work platforms, Self-propelled
3531P82 - - Rotary snow blowers, except residential, incl Integral units & Attachments for Mounting (excl parts)
3531P83 - - Scissors-type aerial work platforms, Self-propelled
3531P85 - - Boom- & Scissors-type aerial work platforms, not Self-propelled
3531P87 - - Truck mounted aerial work platforms
3531P90 - - Aerial work platforms
3531P97 - - All other Construction machinery & Equipment, Complete units, incl Well point systems (excl parts)
3531XX0 - - Construction machinery (Miscellaneous - Volume)
3531XX2 - - Construction machinery (Miscellaneous - Speciality)