Includes
Wall Type Fans; Pedestal Type Fans; Household Type and Attic Type Exhaust Fans; Floor Fans; Forced Draft Exhaust and Disposal Kits; Fans; Air Circulators, and Blower Equipment, whether designated as "industrial" or "nonindustrial" by application and/or use.

Excludes
Combination Heater-Fans (see FSC 4520).

Notes
Fans and impellers which are specifically designed for use with specific individual types of equipment are to be classified in the same classes as their next higher assemblies or in the appropriate components or accessories classes (as in group 25 or 29 or class 1680) as prescribed by the indexes and structure of the FSC.

Possible NAICS Codes
333413 – Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing
333414 – Heating Equipment (except Warm Air Furnaces) Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333120 – Construction Machinery Manufacturing
333415 – Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
333618 – Other Engine Equipment Manufacturing
332510 – Hardware Manufacturing

Includes
Electronic Precipitators; Dust Collection Equipment.

Excludes
Fan and Blower Equipment (FSC 4140); Air Conditioning Equipment (FSC 4120).

Possible NAICS Codes
333413 – Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing
333415 – Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
339113 – Surgical Appliance and Supplies Manufacturing
335210 – Small Electrical Appliance Manufacturing
336110 – Automobile and Light Duty Motor Vehicle Manufacturing
488190 – Other Support Activities for Air Transportation

Notes
This class includes those filters and networks which consist of a combination of resistors, capacitors, or coils, but not a combination of resistors only (classified in 5905). capacitors only (classified in 5910), or coils only (classified in 5950).

Possible NAICS Codes
334419 – Other Electronic Component Manufacturing
334416 – Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing
333413 – Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing
334220 – Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing
334413 – Semiconductor and Related Device Manufacturing
334417 – Electronic Connector Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
444180 – Other Building Material Dealers
334511 – Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing

Includes
Heat Exchanger Equipment; Refrigerant Strainers; Refrigeration Compressors; Air Conditioning and Refrigeration Servicing Equipment, such as Charging and Testing Manifolds, Lines and Units; Operating Components of Refrigeration and Air Conditioning Equipment, Plants, and Systems classified in classes 4110 and 4120.

Excludes
Refrigeration and Air Conditioning Plants (see classes 4110 and 4120): Collections of Refrigeration Components "packaged" as a unit including a refrigeration compressor, condenser, evaporator, etc., specifically designed and tailored for applications such as walk-in type refrigerators. Individual components of the "packaged" unit will be classified in class 4130, or as otherwise specifically prescribed by the indexes and structure of the FSC. The complete "package" unit will be classified in class 4110.

Possible NAICS Codes
333415 – Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
333618 – Other Engine Equipment Manufacturing
333120 – Construction Machinery Manufacturing
332112 – Nonferrous Forging
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
221330 – Steam and Air-Conditioning Supply
336211 – Motor Vehicle Body Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
333241 – Food Product Machinery Manufacturing
333413 – Industrial and Commercial Fan and Blower and Air Purification Equipment 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
333413 – Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing
333912 – Air and Gas Compressor Manufacturing
334290 – Other Communications Equipment Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332510 – Hardware Manufacturing
423730 – Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers
221330 – Steam and Air-Conditioning Supply

Includes
Refuse Cans; Sprinkling Cans; Clothes Hampers; Household Basket; Fabric Utility Containers.

Possible NAICS Codes
332216 – Saw Blade and Handtool Manufacturing
332510 – Hardware Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
423710 – Hardware Merchant Wholesalers
333914 – Measuring, Dispensing, and Other Pumping Equipment Manufacturing
332431 – Metal Can Manufacturing
339994 – Broom, Brush, and Mop Manufacturing
326199 – All Other Plastics Product Manufacturing
325612 – Polish and Other Sanitation Good Manufacturing

Includes
Scouring Powders; Washing Compounds; Detergents; Nontoilet Soaps; Automobile Household Polishes and Waxes.

Excludes
Shaving Soap; Toilet-Soap; Abrasive Polishing Compounds; Metal Finishing Abrasives; Surgical Detergents

Possible NAICS Codes
334111 – Electronic Computer Manufacturing
332510 – Hardware Manufacturing
332216 – Saw Blade and Handtool Manufacturing
325611 – Soap and Other Detergent Manufacturing
325612 – Polish and Other Sanitation Good Manufacturing
325998 – All Other Miscellaneous Chemical Product and Preparation Manufacturing
325320 – Pesticide and Other Agricultural Chemical Manufacturing
312112 – Bottled Water Manufacturing
325620 – Toilet Preparation Manufacturing

Includes
Laboratory Glassware; Laboratory Funnels; Laboratory Furnaces; Glass Beads; Laboratory White Sand; Litmus Paper; Paper Filters; Insect Transfixion Pins; Laboratory Glass Wool; Laboratory Furniture, except Dental Laboratory.

Excludes
Instruments covered by other classes in group 66; Dental Laboratory Equipment; Laboratory Scales and Balances; In Vitro Diagnostic Substances and Reagents.

Possible NAICS Codes
423450 – Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
339999 – All Other Miscellaneous Manufacturing
334516 – Analytical Laboratory Instrument Manufacturing

Excludes
Laboratory Centrifuges (FSG 65 and 66); Water Purification Filters (FSC 4610).

Possible NAICS Codes
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
333618 – Other Engine Equipment Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
333120 – Construction Machinery Manufacturing
333914 – Measuring, Dispensing, and Other Pumping Equipment Manufacturing
339950 – Sign Manufacturing
336390 – Other Motor Vehicle Parts Manufacturing
336411 – Aircraft Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing

Includes
Components for all Engines except Aircraft and Guided Missile Prime Moving.

Excludes
Air and Oil Filters (FSC 4310, 4330), Strainers (FSC 4730), and Cleaners (FSC 4310) not specifically designed for use with engines.

Possible NAICS Codes
333618 – Other Engine Equipment Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
336390 – Other Motor Vehicle Parts Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
332510 – Hardware Manufacturing
333120 – Construction Machinery Manufacturing
336310 – Motor Vehicle Gasoline Engine and Engine Parts Manufacturing

Includes
Complete Battery Charging Equipment, Nonrotating; Power Sup-plies, Multiapplication.

Excludes
Rectifying Tubes; (FSC 5960); Rectifying Crystals (FSC 5961); Rotating Equipment (FSC 6125); Transformers (FSC 5950); and Semiconductor Devices and Associated Hardware (FSC 5961).

Notes
This class includes devices employing a means other than mechanical rotation for changing electrical energy from one form to another (i.e., AC to AC, DC to DC, AC to DC, and DC to AC).

Possible NAICS Codes
335999 – All Other Miscellaneous Electrical Equipment and Component Manufacturing
334416 – Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing
335931 – Current-Carrying Wiring Device Manufacturing
335312 – Motor and Generator Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
333241 – Food Product Machinery Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
336611 – Ship Building and Repairing
335311 – Power, Distribution, and Specialty Transformer Manufacturing
334412 – Bare Printed Circuit Board Manufacturing

Description
Engineering and Technical Services

Includes
Includes: System Engineering, Technical Assistance and Other Services Used to Support the Program Office During the Acquisition Cycle

Excludes
Excludes: Language Translation and Sign Language Interpretation (PSC R608)

Possible NAICS Codes
541330 – Engineering Services
541990 – All Other Professional, Scientific, and Technical Services
541512 – Computer Systems Design Services
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
541690 – Other Scientific and Technical Consulting Services
541620 – Environmental Consulting Services
336611 – Ship Building and Repairing
541519 – Other Computer Related Services
541611 – Administrative Management and General Management Consulting Services
334511 – Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument 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
423710 – Hardware Merchant Wholesalers
444110 – Home Centers
339999 – All Other Miscellaneous Manufacturing
333618 – Other Engine Equipment Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
336411 – Aircraft Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333120 – Construction Machinery 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
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
326299 – All Other Rubber Product Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
333991 – Power-Driven Handtool Manufacturing
333120 – Construction Machinery Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing

Includes
Portable Fire Escapes; Safety Nets, Nonbuoyant.

Excludes
Divers' Suits; Fixed Fire Escapes

Possible NAICS Codes
333310 – Commercial and Service Industry Machinery Manufacturing
339115 – Ophthalmic Goods Manufacturing
423830 – Industrial Machinery and Equipment Merchant Wholesalers
339113 – Surgical Appliance and Supplies Manufacturing
315990 – Apparel Accessories and Other Apparel Manufacturing
313230 – Nonwoven Fabric Mills
444140 – Hardware Retailers