Includes
Adapters; Bends; Caps; Clamps; Connectors; Couplings; Crosses; Elbows; Expansion Joints; Ferrules; Flanges; Laterals; Lubrication Fittings; Manifolds; Nipples; Nozzles; Outlets; Plugs; Reducers; Swing and Swivel Joints; Tees; Traps; Unions; Wyes.

Excludes
Air Conditioning-Heating Fittings (FSC 4520); Bituminized Fiber and Concrete Fittings (FSC 5630); Conduit Boxes and Fittings (FSC 5975); Downspout Fittings (FSC 5670); Medical and Surgical Fittings (FSC 6515); Laboratory Fittings (FSC 6640); Post Caps and Rail Ends (FSC 5660); Machine Thread Bushings and Plugs (FSC 5365).

Possible NAICS Codes
332996 – Fabricated Pipe and Pipe Fitting Manufacturing
332919 – Other Metal Valve and Pipe Fitting Manufacturing
326122 – Plastics Pipe and Pipe Fitting Manufacturing
333618 – Other Engine Equipment Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
333120 – Construction Machinery Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing

Includes
Tube, Knob, Cleat, Strain, and Standoff Insulators; Feed Thru Insulators; Bead Insulators; Varnish Cambrie Tape; Friction Tape.

Possible NAICS Codes
335999 – All Other Miscellaneous Electrical Equipment and Component Manufacturing
335932 – Noncurrent-Carrying Wiring Device Manufacturing
326122 – Plastics Pipe and Pipe Fitting Manufacturing
339999 – All Other Miscellaneous Manufacturing
331210 – Iron and Steel Pipe and Tube Manufacturing from Purchased Steel
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
335931 – Current-Carrying Wiring Device Manufacturing

Includes
Culvert Pipes; Culvert Pipe Connector Bands; Metallic Pipes; Plastic Pipes; Tubes and Rigid Tubing and their assemblies.

Excludes
Air Conditioning-Heating Pipes (FSC 4520); Asbestos and Cement, Bituminized Fiber, Clay and Concrete Pipes (FSC 5630); Conduit Pipes and their assemblies (FSC 5975); Downspout Pipes (FSC 5670); Exhaust Pipes (FSC 1560, 2990, and 4520); Fire Extinguishing Systems Pipes and Tubes and their assemblies (FSC 4210); Flexible Tubing (FSC 4720; Glass Tubing (FSC 6640, and 9340); Laboratory Tubes (FSC 6640); Medical and Surgical Tubes (FSC 6515).

Possible NAICS Codes
336411 – Aircraft Manufacturing
332996 – Fabricated Pipe and Pipe Fitting Manufacturing
331210 – Iron and Steel Pipe and Tube Manufacturing from Purchased Steel
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
326122 – Plastics Pipe and Pipe Fitting Manufacturing
331420 – Copper Rolling, Drawing, Extruding, and Alloying
333618 – Other Engine Equipment Manufacturing
332510 – Hardware Manufacturing
488190 – Other Support Activities for Air Transportation

Includes
Door Frames; Window Frames; Window Sashes; Eave Troughs (gutters); Gratings; Grilles, Shutters; Fixed Fire Escapes; Mounted Partitions.

Excludes
Plumbing and Associated Components such as Sinks; Wallboard and Items Classified as Furniture.

Notes
Items specified as Wooden are classified in FSC 5520.

Possible NAICS Codes
326122 – Plastics Pipe and Pipe Fitting Manufacturing
444180 – Other Building Material Dealers
332321 – Metal Window and Door Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
332311 – Prefabricated Metal Building and Component Manufacturing
236220 – Commercial and Institutional Building Construction
321992 – Prefabricated Wood Building Manufacturing
238290 – Other Building Equipment Contractors
332510 – Hardware Manufacturing
332322 – Sheet Metal Work Manufacturing

Includes
Cloth; Papers; Powders; Abrasive Polishing Compounds; Metal Finishing Abrasives; Industrial Diamonds; Diamond Dust; Rouge.

Possible NAICS Codes
327910 – Abrasive Product Manufacturing
423710 – Hardware Merchant Wholesalers
326122 – Plastics Pipe and Pipe Fitting Manufacturing
332510 – Hardware Manufacturing

Includes
Air Duct, Metallic, Nonmetallic, and Textile Fiber Hoses and their assemblies; Flexible Tubing and their assemblies.

Excludes
Conduit and their assemblies (FSC 5975); Laboratory Tubes (FSC 6640); Medical and Surgical Tubes (FSC 6515); Rigid Tubing and their assemblies (FSC 4710).

Possible NAICS Codes
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
326220 – Rubber and Plastics Hoses and Belting Manufacturing
333120 – Construction Machinery Manufacturing
333618 – Other Engine Equipment Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
336411 – Aircraft Manufacturing
332510 – Hardware Manufacturing
332919 – Other Metal Valve and Pipe Fitting Manufacturing

Description
Warehouse Truck and Tractors, Self-Propelled

Includes
Tug Jockeys; Fork Lift Trucks; Platform Truck; Straddle Trucks.

Possible NAICS Codes
333924 – Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing
333120 – Construction Machinery Manufacturing
423830 – Industrial Machinery and Equipment Merchant Wholesalers
336110 – Automobile and Light Duty Motor Vehicle Manufacturing
333923 – Overhead Traveling Crane, Hoist, and Monorail System Manufacturing
336211 – Motor Vehicle Body Manufacturing
333618 – Other Engine Equipment Manufacturing
336212 – Truck Trailer Manufacturing
326122 – Plastics Pipe and Pipe Fitting Manufacturing
326220 – Rubber and Plastics Hoses and Belting Manufacturing

Description
Miscellaneous Materials Handling Equipment.

Includes
Skids; Pallets

Excludes
Airfield Engine Transport Skids.

Possible NAICS Codes
488190 – Other Support Activities for Air Transportation
333924 – Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
332323 – Ornamental and Architectural Metal Work Manufacturing
333922 – Conveyor and Conveying Equipment Manufacturing
333923 – Overhead Traveling Crane, Hoist, and Monorail System Manufacturing
332311 – Prefabricated Metal Building and Component Manufacturing
332510 – Hardware Manufacturing
321920 – Wood Container and Pallet Manufacturing
325211 – Plastics Material and Resin Manufacturing

Includes
Demineralizers; Filtration Equipment; Ice and Snow Melters.

Excludes
Water Purification Compounds (FSC 6810 and 7930); Water Softening Compounds (FSC 6810 and 7930).

Possible NAICS Codes
333310 – Commercial and Service Industry Machinery Manufacturing
221310 – Water Supply and Irrigation Systems
333914 – Measuring, Dispensing, and Other Pumping Equipment Manufacturing
333924 – Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
334516 – Analytical Laboratory Instrument Manufacturing
325998 – All Other Miscellaneous Chemical Product and Preparation Manufacturing

Description
Hardware

Includes
Access Covers; Bumpers; Casters; Cabinet and Door Hardware; Clevises; Hinges; Latches; Straps and Strapping; Turnbuckles; Webbed Straps.

Excludes
Weapons System Hardware (5342).

Notes
Common hardware designed primarily for commercial use will be classified in this FSC. Hardware is the physical, tangible, and permanent components of end items that may not be classified elsewhere. It consists also of common items that are commonly used in construction and/or manufacturing (e.g., hinges, door locks).

Possible NAICS Codes
332510 – Hardware Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
444110 – Home Centers
423710 – Hardware Merchant Wholesalers
333618 – Other Engine Equipment Manufacturing
339999 – All Other Miscellaneous Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
336411 – Aircraft Manufacturing
333120 – Construction Machinery Manufacturing

Includes
Concrete Pipe and Conduit; Clay Pipe and Conduit for underground use; Drain Tile; Nonmetallic Pipe Fittings for underground use.

Excludes
Nonmetallic Pipe, Conduit, and Fittings for laboratory or electrical use; Hose and Tubing, Flexible Nonmetallic.

Possible NAICS Codes
326122 – Plastics Pipe and Pipe Fitting Manufacturing
332510 – Hardware Manufacturing
332996 – Fabricated Pipe and Pipe Fitting Manufacturing
335999 – All Other Miscellaneous Electrical Equipment and Component Manufacturing
236220 – Commercial and Institutional Building Construction
237110 – Water and Sewer Line and Related Structures Construction
332919 – Other Metal Valve and Pipe Fitting Manufacturing
444140 – Hardware Retailers
237310 – Highway, Street, and Bridge Construction
331210 – Iron and Steel Pipe and Tube Manufacturing from Purchased Steel

Includes
Electric Motor Operated Valves; Hydraulic Operated Valves; Solenoid Operated Valves.

Excludes
Engine Intake and Exhaust valves;(FSC 2990, 2815); Valves specifically designed for use with fire fighting equipment,(FSC 4210); plumbing equipment, and the like (FSC 4540).

Possible NAICS Codes
332911 – Industrial Valve Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332919 – Other Metal Valve and Pipe Fitting Manufacturing
332912 – Fluid Power Valve and Hose Fitting Manufacturing
333618 – Other Engine Equipment Manufacturing
336310 – Motor Vehicle Gasoline Engine and Engine Parts Manufacturing
333120 – Construction Machinery Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing

Includes
Locknuts; Eye Nuts; Plain Nuts; Castellated Nuts; Wing Nuts; Plate Nuts; Push on Nuts; Concave and Convex Washers; Flat Washers; Keyed Washers; Lock Washers; Shouldered Washers; Split Washers.

Excludes
Bearing Thrust Washers (FSC 3120); Shims (FSC 5365); Ring Spacers (FSC 5365); Plate Spacers (FSC 5365); Lock Rings (FSC 5365).

Notes
Nuts and washers, including specially designed, are to be classified in this FSC. a. Nuts are a small metal block made in a variety of shapes such as square and hexagonal which is drilled and internally threaded. b. Washers are a perforated piece of metal, leather, or other materials of various shapes or forms. They are used primarily as a seat for a bolt, nut, screw, rivet or nail to distribute pressure and prevent endwise motion over an area and/or to prevent movement between two parts by means of restraining features created by the shape of its edges.

Possible NAICS Codes
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
333618 – Other Engine Equipment Manufacturing
336411 – Aircraft Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332510 – Hardware Manufacturing
325611 – Soap and Other Detergent Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
332721 – Precision Turned Product Manufacturing
322299 – All Other Converted Paper Product Manufacturing
331529 – Other Nonferrous Metal Foundries (except Die-Casting)

Description
Modification of Equipment: Water Purification and Sewage Treatment Equipment

Possible NAICS Codes
326122 – Plastics Pipe and Pipe Fitting Manufacturing
237110 – Water and Sewer Line and Related Structures Construction
541330 – Engineering Services
221310 – Water Supply and Irrigation Systems
221320 – Sewage Treatment Facilities
236220 – Commercial and Institutional Building Construction
334513 – Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables
562219 – Other Nonhazardous Waste Treatment and Disposal

Description
Hazardous Material Spill Containment and Clean-up Equipment and Material

Includes
Secondary Spill Containment Sumps; Liquid Spill Containment Pallets; Spill Containment Basins; Spill Containment Systems; Absorbent, Sorbent and Blotting Materials.

Possible NAICS Codes
325612 – Polish and Other Sanitation Good Manufacturing
313230 – Nonwoven Fabric Mills
325998 – All Other Miscellaneous Chemical Product and Preparation Manufacturing
339113 – Surgical Appliance and Supplies Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
339999 – All Other Miscellaneous Manufacturing
326199 – All Other Plastics Product Manufacturing
562211 – Hazardous Waste Treatment and Disposal
333248 – All Other Industrial Machinery Manufacturing
423990 – Other Miscellaneous Durable Goods Merchant Wholesalers