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
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
Brickmaking Machinery.

Possible NAICS Codes
327390 – Other Concrete Product Manufacturing
327320 – Ready-Mix Concrete Manufacturing
238110 – Poured Concrete Foundation and Structure Contractors
212319 – Other Crushed and Broken Stone Mining and Quarrying
327331 – Concrete Block and Brick Manufacturing
212312 – Crushed and Broken Limestone Mining and Quarrying
212321 – Construction Sand and Gravel Mining
327120 – Clay Building Material and Refractories Manufacturing
444180 – Other Building Material Dealers
444140 – Hardware Retailers

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
327331 – Concrete Block and Brick Manufacturing
332311 – Prefabricated Metal Building and Component Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
336611 – Ship Building and Repairing
327390 – Other Concrete Product Manufacturing
322211 – Corrugated and Solid Fiber Box Manufacturing
332510 – Hardware Manufacturing
332323 – Ornamental and Architectural Metal Work 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
238990 – All Other Specialty Trade Contractors
238340 – Tile and Terrazzo Contractors
327390 – Other Concrete Product Manufacturing
314110 – Carpet and Rug Mills
238330 – Flooring Contractors
423320 – Brick, Stone, and Related Construction Material Merchant Wholesalers
238110 – Poured Concrete Foundation and Structure Contractors
238140 – Masonry Contractors
811490 – Other Personal and Household Goods Repair and Maintenance

Includes
Asphalt Elevators; Asphalt Heaters; Asphalt Kettles; Asphalt Transfer Equipment; Batching Plants; Stabilizing and Compacting Equipment; Concrete Mixers (All Types); Concrete Vibrators; Bituminous and Concrete Pavers; Asphalt Distributors; Sheepsfoot Rollers; Rooters; Rippers; Pile Drivers; Bitumen Heaters; Cable Laying, Lashing, Spinning, and Reeling Equipment.

Excludes
Earth Moving and Excavating Equipment (FSC 3805 & 3810); Pile Driving Attachments for Cranes and Crane-Shovels (FSC 3815); Special Individual Work and Power Sections of Construction Equipment with a quick connect/disconnect capability (FSC 3805)

Possible NAICS Codes
333120 – Construction Machinery Manufacturing
423830 – Industrial Machinery and Equipment Merchant Wholesalers
532412 – Construction, Mining, and Forestry Machinery and Equipment Rental and Leasing
333924 – Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing
336110 – Automobile and Light Duty Motor Vehicle Manufacturing
333111 – Farm Machinery and Equipment Manufacturing
212321 – Construction Sand and Gravel Mining
236210 – Industrial Building Construction
336999 – All Other Transportation Equipment Manufacturing
444140 – Hardware Retailers

Includes
Metal Bars and Rods

Excludes
Muck Bar (FSC 9640); Rods for Wire (FSC 9640); Sheet Bar (FSC 9640); Threaded Rods (FSC 5306); Grooved Rod (FSC 5340).

Notes
This class contains bulk material only. Specially designed items should be placed in a more appropriate class. a. Bars are elongated pieces of metal of simple uniform cross-sections usually rectangular, circular, or hexagonal produced by forging or hotrolling, also known as barstock. b. Rods are thin round metal bar, differentiated by dimensional parameters, listed in the item name definition.

Possible NAICS Codes
332111 – Iron and Steel Forging
331110 – Iron and Steel Mills and Ferroalloy Manufacturing
488190 – Other Support Activities for Air Transportation
331315 – Aluminum Sheet, Plate, and Foil Manufacturing
331221 – Rolled Steel Shape Manufacturing
331491 – Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding
332312 – Fabricated Structural Metal Manufacturing
331210 – Iron and Steel Pipe and Tube Manufacturing from Purchased Steel
423510 – Metal Service Centers and Other Metal Merchant Wholesalers
333310 – Commercial and Service Industry Machinery Manufacturing

Possible NAICS Codes
237990 – Other Heavy and Civil Engineering Construction
561990 – All Other Support Services
238990 – All Other Specialty Trade Contractors
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
238910 – Site Preparation Contractors
236220 – Commercial and Institutional Building Construction
561730 – Landscaping Services
238210 – Electrical Contractors and Other Wiring Installation Contractors
238320 – Painting and Wall Covering Contractors
238190 – Other Foundation, Structure, and Building Exterior Contractors

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
238320 – Painting and Wall Covering Contractors
561210 – Facilities Support Services
236118 – Residential Remodelers
238990 – All Other Specialty Trade Contractors
238330 – Flooring Contractors
236220 – Commercial and Institutional Building Construction
238220 – Plumbing, Heating, and Air-Conditioning Contractors
238390 – Other Building Finishing Contractors
238140 – Masonry Contractors
561720 – Janitorial Services

Possible NAICS Codes
236220 – Commercial and Institutional Building Construction
237990 – Other Heavy and Civil Engineering Construction
238990 – All Other Specialty Trade Contractors
237310 – Highway, Street, and Bridge Construction
238110 – Poured Concrete Foundation and Structure Contractors
238910 – Site Preparation Contractors
237110 – Water and Sewer Line and Related Structures Construction
562910 – Remediation Services
237130 – Power and Communication Line and Related Structures Construction
238190 – Other Foundation, Structure, and Building Exterior Contractors

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

Includes
Cereal Grains; Sugar Crops; Crude Rubber.

Possible NAICS Codes
115310 – Support Activities for Forestry
311119 – Other Animal Food Manufacturing
325120 – Industrial Gas Manufacturing
339999 – All Other Miscellaneous Manufacturing
541519 – Other Computer Related Services
311999 – All Other Miscellaneous Food Manufacturing
111150 – Corn Farming
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
333112 – Lawn and Garden Tractor and Home Lawn and Garden Equipment Manufacturing
532412 – Construction, Mining, and Forestry Machinery and Equipment Rental and Leasing

Includes
Crayons; Erasers; File Holders; Writing Ink; Printing Ink; Paper Fasteners; Pencils; Penholders and Pen Points; Rulers, Office Type; Art Supplies; Tape, Pressure Sensitive Adhesive

Excludes
Office Devices; Fountain Pens; Artists' Brushes; Paper Stationery; Record Forms; Mechanical Pencils.

Possible NAICS Codes
339940 – Office Supplies (except Paper) Manufacturing
459410 – Office Supplies and Stationery Retailers
322230 – Stationery Product Manufacturing
322120 – Paper Mills
325992 – Photographic Film, Paper, Plate, Chemical, and Copy Toner Manufacturing
424130 – Industrial and Personal Service Paper Merchant Wholesalers
424120 – Stationery and Office Supplies Merchant Wholesalers
444110 – Home Centers
332510 – Hardware Manufacturing

Includes
Chambers; Wind Tunnels; Enclosures specifically designed to simulate an environmental condition; Weatherometers; Fadeometers; Specially designed equipment and components exclusively related to environmental chambers.

Excludes
General purpose prefabricated buildings, chambers, panels, and components (FSC 5410); Controlled Environmental Conditioning Kits and Sets (FSC 4240); Baths (FSC 4510); Ovens (FSC 7310); Kilns (FSC 3630); Radiosonde Baseline Check Sets (FSC 6660); Divers Recompression Chambers (FSC 4220); Altitude Training Decompression Chambers (FSC 6930); and chambers used as training devices (FSC 6930); Checkout and Test Equipment (FSC 6625); Chemical Analysis Instruments (FSC 6630); Electrical and Electronic Properties Measuring and Testing Instruments (FSC 6625); Meteorological Instruments (FSC 6660).

Notes
This class includes only those environmental chambers used exclusively to perform controlled tests, under simulated conditions, to determine physical damage and/or changes in operating characteristics for equipment and components such as Humidity, Immersion, Moisture; Altitude; Explosion; Thermal Shock; Sand and Dust; Flammability; Seal. Environmental chambers included in this class provide data regarding service life and behavior of various items equivalent to actual service conditions existing in the field.

Possible NAICS Codes
334516 – Analytical Laboratory Instrument Manufacturing
334519 – Other Measuring and Controlling Device Manufacturing
334513 – Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables
333415 – Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
334512 – Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use
562910 – Remediation Services
334515 – Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals
339113 – Surgical Appliance and Supplies Manufacturing
326150 – Urethane and Other Foam Product (except Polystyrene) Manufacturing
333994 – Industrial Process Furnace and Oven Manufacturing