Includes
Bathtubs; Commodes; Lavatories; Shower Cabinets; Sinks; Water Closets; Accessories and Component Parts, such as Dispensers, Faucets, Holders, Racks, Shower Heads, Flush Valves and Stop Valves.

Excludes
Fittings and Specialties for Hose, Pipe and Tube (FSC 4730).

Possible NAICS Codes
332919 – Other Metal Valve and Pipe Fitting Manufacturing
332913 – Plumbing Fixture Fitting and Trim Manufacturing
423710 – Hardware Merchant Wholesalers
326191 – Plastics Plumbing Fixture Manufacturing
238220 – Plumbing, Heating, and Air-Conditioning Contractors
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
423720 – Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers
332510 – Hardware Manufacturing
444110 – Home Centers

Includes
Automatic Nonpowered Valves; Gate, Globe, Angle, Check, and Relief Valves; Cocks.

Excludes
Fire Hydrants (FSC 4210) Sprinkler Heads (FSC 4210); 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
332919 – Other Metal Valve and Pipe Fitting Manufacturing
336310 – Motor Vehicle Gasoline Engine and Engine Parts Manufacturing
332912 – Fluid Power Valve and Hose Fitting Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333618 – Other Engine Equipment Manufacturing
336411 – Aircraft Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
332510 – Hardware Manufacturing

Includes
Compactors; Destructors; Garbage Disposals; Incinerators; Septic Tanks.

Possible NAICS Codes
562991 – Septic Tank and Related Services
332913 – Plumbing Fixture Fitting and Trim Manufacturing
562111 – Solid Waste Collection
333310 – Commercial and Service Industry Machinery Manufacturing
562119 – Other Waste Collection
332439 – Other Metal Container Manufacturing
333414 – Heating Equipment (except Warm Air Furnaces) Manufacturing
562211 – Hazardous Waste Treatment and Disposal
562213 – Solid Waste Combustors and Incinerators
325998 – All Other Miscellaneous Chemical Product and Preparation 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
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
332510 – Hardware Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing

Includes
Boilers, 15 pounds WSP and under (for boilers over 15 pounds WSP, see FSC 4410); Domestic Water Storage Tanks through 100 gallon capacity; Fireplace Heaters; Furnaces; Space Heaters; Heating Radiators; Immersion Heaters; Water Heaters, through 100 gallon recovery capacity (for heaters over 100 gallons recovery capacity, see FSC 4410).

Excludes
Vehicle Heaters (FSC 2540); Aircraft Heaters (FSC 1660).

Possible NAICS Codes
333414 – Heating Equipment (except Warm Air Furnaces) Manufacturing
335210 – Small Electrical Appliance Manufacturing
333415 – Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
336411 – Aircraft Manufacturing
332323 – Ornamental and Architectural Metal Work Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
333241 – Food Product Machinery Manufacturing
238220 – Plumbing, Heating, and Air-Conditioning Contractors
424410 – General Line Grocery Merchant Wholesalers
423720 – Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers

Description
Maintenance, Repair and Rebuilding of Equipment: Plumbing, Heating, and Waste Disposal Equipment

Possible NAICS Codes
238220 – Plumbing, Heating, and Air-Conditioning Contractors
561210 – Facilities Support Services
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
236220 – Commercial and Institutional Building Construction
237110 – Water and Sewer Line and Related Structures Construction
238210 – Electrical Contractors and Other Wiring Installation Contractors
334290 – Other Communications Equipment Manufacturing
561790 – Other Services to Buildings and Dwellings

Includes
Anesthesia Apparatus; Blood Transfusion Apparatus; Oxygen Therapy Apparatus; Respirators; Orthopedic Supplies; Arch Supports; Clinical Thermometers; Sutures; Hearing Aids; Veterinary Equipment, Endoscopes, Fiber Optic.

Excludes
Ophthalmic Instruments, Equipment, and Supplies; Non-Medical Endoscopes.

Possible NAICS Codes
423450 – Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
339113 – Surgical Appliance and Supplies Manufacturing
339112 – Surgical and Medical Instrument Manufacturing
325411 – Medicinal and Botanical 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
331210 – Iron and Steel Pipe and Tube Manufacturing from Purchased Steel
332996 – Fabricated Pipe and Pipe Fitting Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
331420 – Copper Rolling, Drawing, Extruding, and Alloying
326122 – Plastics Pipe and Pipe Fitting Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
333618 – Other Engine Equipment Manufacturing
488190 – Other Support Activities for Air Transportation
332510 – Hardware Manufacturing

Excludes
Laboratory Jet Pumps (FSG 65 and 66).

Possible NAICS Codes
333996 – Fluid Power Pump and Motor Manufacturing
333914 – Measuring, Dispensing, and Other Pumping Equipment Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333618 – Other Engine Equipment Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
333991 – Power-Driven Handtool Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
333912 – Air and Gas Compressor Manufacturing
336412 – Aircraft Engine and Engine Parts 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
339999 – All Other Miscellaneous Manufacturing
423710 – Hardware Merchant Wholesalers
333618 – Other Engine Equipment Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
336411 – Aircraft Manufacturing
444140 – Hardware Retailers
333120 – Construction Machinery Manufacturing

Includes
Warming and/or Chilling Tables, Stationary and Portable; Serving Carts; Field and Mobile Baking Ovens; Toasters; Waffle Irons; Grills; Special Aircraft, Marine, and Railway Type Food Cooking Equipment; Utensils with Integral Heating Units; Cafeteria Type Display Cases and Showcases; Soda Fountains; Milk, Soda, and/or Ice Cream Dispensers; Cold Food Counters; Combination Heated-Refrigerated Food Serving Equipment; Carbonators; and other types of refrigerated food serving and display equipment commonly used in cafeterias, mess hall kitchens, and the like.

Excludes
Carts other than Serving; Commissary or Food Store Type Refrigeration Equipment; Commercial Household, or Professional and Scientific Refrigerators; Drinking Fountains; (see class 4110 for items excluded from class 7310).

Notes
This class includes warming and/ or chilling equipment used for the display and serving of food.

Possible NAICS Codes
333241 – Food Product Machinery Manufacturing
325998 – All Other Miscellaneous Chemical Product and Preparation Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
325211 – Plastics Material and Resin Manufacturing
322230 – Stationery Product Manufacturing
332215 – Metal Kitchen Cookware, Utensil, Cutlery, and Flatware (except Precious) Manufacturing
337215 – Showcase, Partition, Shelving, and Locker 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
333618 – Other Engine Equipment Manufacturing
333120 – Construction Machinery Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
336411 – Aircraft Manufacturing
332510 – Hardware Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332919 – Other Metal Valve and Pipe Fitting Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing

Includes
Store Type Units; Window and Room Type Units; Marine, and Vehicular Air Conditioning Units; Air Conditioning Plants and Systems.

Excludes
Air Conditioning Components (FSC 4130, or as otherwise specifically prescribed by the indexes and structure of the FSC).

Notes
This class includes only complete air conditioning equipment, systems, and plants. Also included are specially designed nonoperating accessories such as a window panel used with a window type air conditioning unit to facilitate mounting. Excluded from this class are operating components, assemblies, parts, attachments, or accessories for use in or on air conditioning equipment, which are to be classified in FSC 4130, or as otherwise specifically prescribed by the indexes and structure of the FSC.

Possible NAICS Codes
333415 – Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
238220 – Plumbing, Heating, and Air-Conditioning Contractors
335220 – Major Household Appliance Manufacturing
423730 – Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers
334290 – Other Communications Equipment Manufacturing
333413 – Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing
221330 – Steam and Air-Conditioning Supply
444140 – Hardware Retailers
333912 – Air and Gas Compressor Manufacturing
332510 – Hardware 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
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
334516 – Analytical Laboratory Instrument Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
326122 – Plastics Pipe and Pipe Fitting Manufacturing
325998 – All Other Miscellaneous Chemical Product and Preparation Manufacturing
312112 – Bottled Water Manufacturing
237110 – Water and Sewer Line and Related Structures Construction