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
331420 – Copper Rolling, Drawing, Extruding, and Alloying
326122 – Plastics Pipe and Pipe Fitting Manufacturing
333618 – Other Engine Equipment Manufacturing
332510 – Hardware Manufacturing
488190 – Other Support Activities for Air Transportation

Possible NAICS Codes
327120 – Clay Building Material and Refractories Manufacturing
332510 – Hardware Manufacturing
331491 – Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding
325998 – All Other Miscellaneous Chemical Product and Preparation Manufacturing
921190 – Other General Government Support
423710 – Hardware Merchant Wholesalers
335991 – Carbon and Graphite Product Manufacturing
333248 – All Other Industrial Machinery Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
332114 – Custom Roll Forming

Includes
Asphalt; Cinders; Gravel; Lime; Sand; Rough Dimension Stone, including Rubble; Cement; Ballast.

Excludes
Block, Shaped; Brick.

Possible NAICS Codes
212321 – Construction Sand and Gravel Mining
423710 – Hardware Merchant Wholesalers
327320 – Ready-Mix Concrete Manufacturing
212312 – Crushed and Broken Limestone Mining and Quarrying
212319 – Other Crushed and Broken Stone Mining and Quarrying
324121 – Asphalt Paving Mixture and Block Manufacturing
327992 – Ground or Treated Mineral and Earth Manufacturing
327999 – All Other Miscellaneous Nonmetallic Mineral Product Manufacturing
423320 – Brick, Stone, and Related Construction Material Merchant Wholesalers
327991 – Cut Stone and Stone Product Manufacturing

Includes
Cork Fabricated Basic Materials; Asbestos Fabricated Materials; Manufactured Mica; Minerals for scientific and technical use (cut but not mounted); Pottery Supplies; Catgut and Wormgut; Vegetable Brush Fibers; Bagasse.

Possible NAICS Codes
327999 – All Other Miscellaneous Nonmetallic Mineral Product Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
325991 – Custom Compounding of Purchased Resins
332510 – Hardware Manufacturing
339950 – Sign Manufacturing
337214 – Office Furniture (except Wood) Manufacturing
333618 – Other Engine Equipment Manufacturing
326199 – All Other Plastics Product Manufacturing
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
322220 – Paper Bag and Coated and Treated Paper Manufacturing

Description
Tile, Brick, and Block

Includes
Concrete Building Block; Cinder Block; Slag Brick; Cut Stone; Cut and Polished Stone; Ceramic Floor and Wall Tile; Architectural Terra Cotta; Concrete Slabs and Grilles.

Excludes
Glass Building Block (FSC 9340)

Possible NAICS Codes
327331 – Concrete Block and Brick Manufacturing
238340 – Tile and Terrazzo Contractors
238990 – All Other Specialty Trade Contractors
327390 – Other Concrete Product Manufacturing
314110 – Carpet and Rug Mills
423320 – Brick, Stone, and Related Construction Material Merchant Wholesalers
236220 – Commercial and Institutional Building Construction
327215 – Glass Product Manufacturing Made of Purchased Glass
327211 – Flat Glass Manufacturing
238330 – Flooring Contractors

Includes
Linoleum; Rubber and Asphalt Tile; Carpets; Rugs; Rug Pads.

Excludes
Vehicular Floor Mats.

Possible NAICS Codes
326299 – All Other Rubber Product Manufacturing
326199 – All Other Plastics Product Manufacturing
314110 – Carpet and Rug Mills
238330 – Flooring Contractors

Includes
Flow-Pressure Instruments; Taximeters; Dynamometers.

Excludes
Dental, Medical, Surgical, and Veterinary Instruments.

Possible NAICS Codes
334519 – Other Measuring and Controlling Device Manufacturing
334513 – Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables
334515 – Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals
334516 – Analytical Laboratory Instrument Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
334419 – Other Electronic Component Manufacturing
333618 – Other Engine Equipment Manufacturing
336411 – Aircraft Manufacturing

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
321992 – Prefabricated Wood Building Manufacturing
236220 – Commercial and Institutional Building Construction
238290 – Other Building Equipment Contractors
332510 – Hardware 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
237110 – Water and Sewer Line and Related Structures Construction
236220 – Commercial and Institutional Building Construction
517810 – All Other Telecommunications
444140 – Hardware Retailers
423720 – Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers
423510 – Metal Service Centers and Other Metal Merchant Wholesalers

Includes
Prefabricated Concrete Placing Forms; Builders' Ladders and Stepladders; Suspension stages.

Excludes
Aircraft Ladders (FSC 1730); Fire Fighting Ladders (FSC 4210); Maintenance Ladders (FSC 4940); Marine Vessel Ladders (FSC 2090); Vehicle Ladders (FSC 2540).

Possible NAICS Codes
532490 – Other Commercial and Industrial Machinery and Equipment Rental and Leasing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
332311 – Prefabricated Metal Building and Component Manufacturing
327331 – Concrete Block and Brick Manufacturing
336611 – Ship Building and Repairing
322211 – Corrugated and Solid Fiber Box Manufacturing
327390 – Other Concrete Product Manufacturing
332510 – Hardware Manufacturing
332323 – Ornamental and Architectural Metal Work Manufacturing

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
333310 – Commercial and Service Industry Machinery Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
333120 – Construction Machinery Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing

Includes
Crucible Furnaces; Cupola Furnaces.

Excludes
Food Industry Ovens (FSC 7310); Metal Heat Treating Furnaces (FSC 3424); Laboratory Type Furnaces (FSC 6640).

Possible NAICS Codes
333994 – Industrial Process Furnace and Oven Manufacturing
325998 – All Other Miscellaneous Chemical Product and Preparation Manufacturing
334516 – Analytical Laboratory Instrument Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
541330 – Engineering Services
333415 – Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
333414 – Heating Equipment (except Warm Air Furnaces) Manufacturing
332510 – Hardware Manufacturing
339113 – Surgical Appliance and Supplies Manufacturing
333241 – Food Product Machinery Manufacturing