Includes
Brake Beams and Components; Couplers; Trucks and Components; Journals and Components; Wheel Sets and Components.

Excludes
Railroad Furniture (FSG 71).

Possible NAICS Codes
336510 – Railroad Rolling Stock Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
332312 – Fabricated Structural Metal Manufacturing
812930 – Parking Lots and Garages
327390 – Other Concrete Product Manufacturing
482112 – Short Line Railroads
423860 – Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers
335312 – Motor and Generator Manufacturing
331110 – Iron and Steel Mills and Ferroalloy Manufacturing

Excludes
Self-Propelled Cars.

Notes
This class includes only complete locomotives and tenders. End items, assemblies, parts, attachments, or accessories for use in or on locomotives and tenders are classified in classes other than this class.

Possible NAICS Codes
562910 – Remediation Services
336510 – Railroad Rolling Stock Manufacturing
562112 – Hazardous Waste Collection
532490 – Other Commercial and Industrial Machinery and Equipment Rental and Leasing
562211 – Hazardous Waste Treatment and Disposal
492110 – Couriers and Express Delivery Services
337127 – Institutional Furniture Manufacturing
336999 – All Other Transportation Equipment Manufacturing
336110 – Automobile and Light Duty Motor Vehicle Manufacturing
335910 – Battery Manufacturing

Includes
Hand Grease Guns; Centralized Lubrication Systems; Hydrostatic Lubricators; Oil and Gasoline Dispensing Pumps; Fuel Oil Dispensing Pumps; Hand Oilers; Grease Dispensers; Pressure Gun Attachments; Sight Feed Lubricators.

Excludes
Alemite and Lubrication Fittings (FSC 4730).

Possible NAICS Codes
333914 – Measuring, Dispensing, and Other Pumping Equipment Manufacturing
333618 – Other Engine Equipment Manufacturing
331318 – Other Aluminum Rolling, Drawing, and Extruding
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
339993 – Fastener, Button, Needle, and Pin Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
332919 – Other Metal Valve and Pipe Fitting Manufacturing
314999 – All Other Miscellaneous Textile Product Mills
333996 – Fluid Power Pump and Motor Manufacturing

Includes
Railroad Rails; Railroad Tie Plates; Railroad Turnouts and Components; Railroad Spikes.

Excludes
Ballast (FSC 5610); Railroad Ties (FSC 5510).

Possible NAICS Codes
331110 – Iron and Steel Mills and Ferroalloy Manufacturing
326199 – All Other Plastics Product Manufacturing
336510 – Railroad Rolling Stock Manufacturing
336611 – Ship Building and Repairing
321114 – Wood Preservation
237990 – Other Heavy and Civil Engineering Construction
488210 – Support Activities for Rail Transportation
331210 – Iron and Steel Pipe and Tube Manufacturing from Purchased Steel
332312 – Fabricated Structural Metal Manufacturing

Includes
Trailed Cars; Self-Propelled Cars.

Excludes
Aerial Tramway Cars.

Notes
This class includes only complete rail cars. End items, assemblies, parts, attachments, or accessories for use in or on rail cars are classified in classes other than this class.

Possible NAICS Codes
336510 – Railroad Rolling Stock Manufacturing
485111 – Mixed Mode Transit Systems
488210 – Support Activities for Rail Transportation
336612 – Boat Building
336211 – Motor Vehicle Body Manufacturing

Description
Maintenance, Repair and Rebuilding of Equipment: Railway Equipment

Possible NAICS Codes
488210 – Support Activities for Rail Transportation
237990 – Other Heavy and Civil Engineering Construction
541350 – Building Inspection Services
336510 – Railroad Rolling Stock Manufacturing
811198 – All Other Automotive Repair and Maintenance
811121 – Automotive Body, Paint, and Interior Repair and Maintenance
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
334513 – Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables
487210 – Scenic and Sightseeing Transportation, Water
333517 – Machine Tool Manufacturing

Description
Right-of-Way Construction and Maintenance Equipment, Railroad

Includes
Rail Laying, Joining, and Shifting Equipment; Self Propelled and Car Mounted Cranes.

Excludes
Hand Tools (FSG 51).

Possible NAICS Codes
336510 – Railroad Rolling Stock Manufacturing
333120 – Construction Machinery Manufacturing
238910 – Site Preparation Contractors
237990 – Other Heavy and Civil Engineering Construction
333924 – Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing
336390 – Other Motor Vehicle Parts Manufacturing
336212 – Truck Trailer Manufacturing
336211 – Motor Vehicle Body Manufacturing
336110 – Automobile and Light Duty Motor Vehicle Manufacturing
334220 – Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing

Description
Support services for end user client computing including Tier 1 and 2 help/service desk, deskside support, adds/moves/changes, workspace technical support, audio/video (A/V, VTC) conferencing, and printer support. A/V and VTC includes support services typically used in conference rooms and dedicated telepresence rooms to enable workforce communications. Printer support includes Managed Print Services (MPS) for multifunction printers (print, scan, fax, copy).

Excludes
Mobile device support.

Possible NAICS Codes
811210 – Electronic and Precision Equipment Repair and Maintenance
541519 – Other Computer Related Services
561210 – Facilities Support Services
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
334111 – Electronic Computer Manufacturing
541330 – Engineering Services
513210 – Software Publishers
238290 – Other Building Equipment Contractors
541512 – Computer Systems Design Services
334511 – Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing

Includes
Cells and Dry Batteries; Nuclear Batteries.

Possible NAICS Codes
335910 – Battery Manufacturing
335999 – All Other Miscellaneous Electrical Equipment and Component Manufacturing
541519 – Other Computer Related Services
339112 – Surgical and Medical Instrument Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing

Includes
Automotive, Industrial, Marine, Locomotive, and all other types of Diesel and Semi-Diesel Engines.

Excludes
Engines Accessories (FSC 2990).

Possible NAICS Codes
333618 – Other Engine Equipment Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
336390 – Other Motor Vehicle Parts Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
333415 – Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
333120 – Construction Machinery Manufacturing
336310 – Motor Vehicle Gasoline Engine and Engine Parts Manufacturing
336211 – Motor Vehicle Body Manufacturing

Includes
Propulsion Shafts; Ship Propellers; Marine Transmissions, Reverse and Reduction Gear Type.

Excludes
Engines (FSC 2810, 2815); Turbines (FSC 2825, 2835, 2840).

Possible NAICS Codes
333618 – Other Engine Equipment Manufacturing
336415 – Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing
336611 – Ship Building and Repairing
336612 – Boat Building
336214 – Travel Trailer and Camper Manufacturing
331529 – Other Nonferrous Metal Foundries (except Die-Casting)
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
333613 – Mechanical Power Transmission Equipment Manufacturing
339991 – Gasket, Packing, and Sealing Device Manufacturing
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance

Includes
RESURFACING

Possible NAICS Codes
237310 – Highway, Street, and Bridge Construction
115310 – Support Activities for Forestry
237990 – Other Heavy and Civil Engineering Construction
236220 – Commercial and Institutional Building Construction
238110 – Poured Concrete Foundation and Structure Contractors
561210 – Facilities Support Services
238990 – All Other Specialty Trade Contractors
238910 – Site Preparation Contractors
488210 – Support Activities for Rail Transportation
488490 – Other Support Activities for Road Transportation

Description
Modification of Equipment: Railway Equipment

Possible NAICS Codes
488210 – Support Activities for Rail Transportation
336510 – Railroad Rolling Stock Manufacturing

Description
Maintenance, Repair and Rebuilding of Equipment: Instruments and Laboratory Equipment

Possible NAICS Codes
811210 – Electronic and Precision Equipment Repair and Maintenance
334516 – Analytical Laboratory Instrument Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
561210 – Facilities Support Services
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
541380 – Testing Laboratories and Services
334519 – Other Measuring and Controlling Device Manufacturing
334515 – Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals

Description
Maintenance, Repair and Rebuilding of Equipment: Ship and Marine Equipment

Possible NAICS Codes
336611 – Ship Building and Repairing
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
811210 – Electronic and Precision Equipment Repair and Maintenance
333618 – Other Engine Equipment Manufacturing
541330 – Engineering Services
334511 – Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
561990 – All Other Support Services
333923 – Overhead Traveling Crane, Hoist, and Monorail System Manufacturing
488390 – Other Support Activities for Water Transportation
332313 – Plate Work Manufacturing