Includes
Dimensional Lumber; Wood Flooring; Mine Timbers; Poles; Railroad Ties; Wood Siding; Molding; Stakes.

Excludes
Millwork (FSC 5520); Plywood and Veneer (FSC 5530); Prefabricated Non-Wood Items (FSC 5670).

Possible NAICS Codes
321212 – Softwood Veneer and Plywood Manufacturing
321912 – Cut Stock, Resawing Lumber, and Planing
321113 – Sawmills
321211 – Hardwood Veneer and Plywood Manufacturing
321215 – Engineered Wood Member Manufacturing
321999 – All Other Miscellaneous Wood Product Manufacturing
423310 – Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers
321920 – Wood Container and Pallet Manufacturing
321114 – Wood Preservation
561720 – Janitorial Services

Includes
Leaf Type Vehicular Springs; Suspension Type Shock Absorbers.

Excludes
Vehicular Hardware (FSG 53); Specialized Vehicular Furniture (FSC 2540).

Possible NAICS Codes
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
336211 – Motor Vehicle Body Manufacturing
333618 – Other Engine Equipment Manufacturing
332510 – Hardware Manufacturing
333120 – Construction Machinery Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
336390 – Other Motor Vehicle Parts Manufacturing
336370 – Motor Vehicle Metal Stamping
336360 – Motor Vehicle Seating and Interior Trim Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing

Includes
Expanded Metal Lath; Airplane Landing Mats; Traction Mats.

Possible NAICS Codes
423610 – Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers
339999 – All Other Miscellaneous Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing

Includes
Plywood and Veneered Panels.

Possible NAICS Codes
321212 – Softwood Veneer and Plywood Manufacturing
321211 – Hardwood Veneer and Plywood Manufacturing
423310 – Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers
561720 – Janitorial Services
321999 – All Other Miscellaneous Wood Product Manufacturing
321920 – Wood Container and Pallet Manufacturing
321113 – Sawmills
321912 – Cut Stock, Resawing Lumber, and Planing
444110 – Home Centers

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
327320 – Ready-Mix Concrete Manufacturing
212312 – Crushed and Broken Limestone Mining and Quarrying
212319 – Other Crushed and Broken Stone Mining and Quarrying
327992 – Ground or Treated Mineral and Earth Manufacturing
324121 – Asphalt Paving Mixture and Block 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
444140 – Hardware Retailers

Includes
Roofing (all materials), including Sheet Metal; Roofing Felt; Roll Roofing; Roofing Tile; Shingles.

Excludes
Tar Paper; Bulk Sheet Metal Roofing and Siding; Wood Siding.

Possible NAICS Codes
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
238160 – Roofing Contractors
321113 – Sawmills
236220 – Commercial and Institutional Building Construction
423330 – Roofing, Siding, and Insulation Material Merchant Wholesalers
324122 – Asphalt Shingle and Coating Materials Manufacturing

Includes
Door Frames; Doors; Window Frames; Window Sashes.

Excludes
Molding (FSC 5510); Prefabricated Non-Wood Items (FSC 5670).

Possible NAICS Codes
332321 – Metal Window and Door Manufacturing
321911 – Wood Window and Door Manufacturing
337212 – Custom Architectural Woodwork and Millwork Manufacturing
321212 – Softwood Veneer and Plywood Manufacturing
332710 – Machine Shops
321999 – All Other Miscellaneous Wood Product Manufacturing
238290 – Other Building Equipment Contractors
444140 – Hardware Retailers
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
321113 – Sawmills

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
332311 – Prefabricated Metal Building and Component Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
321992 – Prefabricated Wood Building Manufacturing
238290 – Other Building Equipment Contractors
236220 – Commercial and Institutional Building Construction
332312 – Fabricated Structural Metal Manufacturing

Includes
Aircraft Arresting Barriers.

Excludes
Airport Runway Marker Lights (see FSC Class 6220).

Possible NAICS Codes
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
488190 – Other Support Activities for Air Transportation
332312 – Fabricated Structural Metal Manufacturing
313210 – Broadwoven Fabric Mills
333995 – Fluid Power Cylinder and Actuator Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
332912 – Fluid Power Valve and Hose Fitting Manufacturing

Possible NAICS Codes
236220 – Commercial and Institutional Building Construction
561210 – Facilities Support Services
238160 – Roofing Contractors
238320 – Painting and Wall Covering Contractors
238220 – Plumbing, Heating, and Air-Conditioning Contractors
238210 – Electrical Contractors and Other Wiring Installation Contractors
238990 – All Other Specialty Trade Contractors
238290 – Other Building Equipment Contractors
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
237990 – Other Heavy and Civil Engineering Construction

Possible NAICS Codes
237990 – Other Heavy and Civil Engineering Construction
236220 – Commercial and Institutional Building Construction
238990 – All Other Specialty Trade Contractors
237310 – Highway, Street, and Bridge Construction
238110 – Poured Concrete Foundation and Structure Contractors
238190 – Other Foundation, Structure, and Building Exterior Contractors
238910 – Site Preparation Contractors
237110 – Water and Sewer Line and Related Structures Construction
339920 – Sporting and Athletic Goods Manufacturing
459110 – Sporting Goods Retailers

Description
Quality Control Services: Office Supplies and Devices

Possible NAICS Codes
423420 – Office Equipment Merchant Wholesalers
562219 – Other Nonhazardous Waste Treatment and Disposal
339940 – Office Supplies (except Paper) Manufacturing
811210 – Electronic and Precision Equipment Repair and Maintenance
459410 – Office Supplies and Stationery Retailers
423430 – Computer and Computer Peripheral Equipment and Software Merchant Wholesalers
322230 – Stationery Product Manufacturing
921190 – Other General Government Support
621999 – All Other Miscellaneous Ambulatory Health Care Services
611710 – Educational Support Services

Description
Quality Control Services: Construction and Building Materials

Possible NAICS Codes
541380 – Testing Laboratories and Services
541350 – Building Inspection Services
541620 – Environmental Consulting Services
541330 – Engineering Services
212321 – Construction Sand and Gravel Mining

Possible NAICS Codes
541310 – Architectural Services
541330 – Engineering Services
236118 – Residential Remodelers
541350 – Building Inspection Services
238320 – Painting and Wall Covering Contractors
423810 – Construction and Mining (except Oil Well) Machinery and Equipment Merchant Wholesalers
212321 – Construction Sand and Gravel Mining
561210 – Facilities Support Services
532412 – Construction, Mining, and Forestry Machinery and Equipment Rental and Leasing
523910 – Miscellaneous Intermediation

Includes
Bar Size Shapes (under 3 inches); Metal Piles and Piling; Angles; Channels; Tees; Zees.

Excludes
Plate, Sheet and Strip Materials (FSC 9515).

Notes
This class contains bulk material only. Specially designed items should be placed in a more appropriate class. This class includes items usually used in building, bridge and similar construction, such as, I beams, angles, and the like.

Possible NAICS Codes
332111 – Iron and Steel Forging
332312 – Fabricated Structural Metal Manufacturing
331221 – Rolled Steel Shape Manufacturing
332710 – Machine Shops
331110 – Iron and Steel Mills and Ferroalloy Manufacturing
332721 – Precision Turned Product Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
337215 – Showcase, Partition, Shelving, and Locker Manufacturing
488190 – Other Support Activities for Air Transportation