Includes
Dowel Pins, Split Pins; Spikes; Tacks; Nonoffice Type Staples; Machine Keys; Brads; Shouldered Pins; Cotter Pins; Nails.

Excludes
Shafts (FSC 3040); Lock Keys (FSC 5340).

Notes
Nails, machine keys, and pins, including specially designed, will be classified in this FSC. a. Nails are slender, usually pointed fasteners with a head, and designed for insertion by impact. b. Machine keys are items generally inserted between two items, usually in a groove, to prevent relative rotation, e.g., shaft and hub, c. Pins are cylindrical items of various materials used to align/attach two or more parts together and may allow for angular movement.

Possible NAICS Codes
332510 – Hardware Manufacturing
332618 – Other Fabricated Wire Product Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
336411 – Aircraft Manufacturing
333618 – Other Engine Equipment Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
444140 – Hardware Retailers
332111 – Iron and Steel Forging
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing

Includes
Sleeve Bearings; Split Bearings; Washer Type Bearings; Jewel Bearings.

Excludes
Antifriction Bearings (FSC 3110); Mounted Bearings (FSC 3130).

Notes
Bearings in this class are generally one piece that retain and position moving and/or rotating parts. They may have lubrication grooves/fitting/facilities or include pre-lubrication.

Possible NAICS Codes
332991 – Ball and Roller Bearing Manufacturing
336411 – Aircraft Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333618 – Other Engine Equipment Manufacturing
332510 – Hardware Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
332111 – Iron and Steel Forging
336390 – Other Motor Vehicle Parts Manufacturing
213113 – Support Activities for Coal Mining
332721 – Precision Turned Product Manufacturing

Includes
Permanent Magnets and Magnetostriction Elements; Caps, Clips, and Contacts, Electrical.

Possible NAICS Codes
334419 – Other Electronic Component Manufacturing
335999 – All Other Miscellaneous Electrical Equipment and Component Manufacturing
334416 – Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing
335931 – Current-Carrying Wiring Device Manufacturing
334413 – Semiconductor and Related Device Manufacturing
339991 – Gasket, Packing, and Sealing Device Manufacturing
336411 – Aircraft Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
541519 – Other Computer Related Services
334417 – Electronic Connector Manufacturing

Includes
Shafts and Shafting; Collars; Gearshafts; Ball Joints; Actuating Cylinders.

Possible NAICS Codes
333613 – Mechanical Power Transmission Equipment Manufacturing
336411 – Aircraft Manufacturing
333618 – Other Engine Equipment Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332510 – Hardware Manufacturing
336350 – Motor Vehicle Transmission and Power Train Parts Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
333612 – Speed Changer, Industrial High-Speed Drive, and Gear 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

Includes
General Purpose Oil Grease, Air, Liquid, Gas, and chemical Seals; Oakum; Prefabricated Gaskets and Seals designed for a single specific application.

Excludes
O-Rings (FSC 5331); Bulk material items, such as; Rubber, Cork, and Asbestos Sheets and Strips (FSG 93); Liquid Gasket Materials (RTV), Permatex, etc.) (FSG 80); RFI and EMI Seals and Gaskets (FSC 5999), and all Seal Retainers.

Notes
This FSC includes only seals and gaskets designed for standard use. Seals, gaskets and packing are made from materials specifically designed and constructed to resist deterioration from the action of heat, gas, chemicals, liquids, and used to fill a cavity and create a tight seal. Similar materials used to make seals, gaskets and packing are available in bulk form, refer to FSG 93, FSG 80, and FSG 83.

Possible NAICS Codes
339991 – Gasket, Packing, and Sealing Device Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
333618 – Other Engine Equipment Manufacturing
336411 – Aircraft Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
339950 – Sign Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
333120 – Construction Machinery Manufacturing
326220 – Rubber and Plastics Hoses and Belting Manufacturing

Excludes
Packing and Gasket Material (FSC 5330).

Possible NAICS Codes
339991 – Gasket, Packing, and Sealing Device Manufacturing
333618 – Other Engine Equipment Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
336310 – Motor Vehicle Gasoline Engine and Engine Parts Manufacturing
332618 – Other Fabricated Wire Product Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
326220 – Rubber and Plastics Hoses and Belting Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
333120 – Construction Machinery Manufacturing

Includes
Ball Bearings; Roller Bearings: Balls; Races.

Excludes
Plain Bearings (FSC 3120); Jewel Bearings (FSC 3120).

Notes
This class includes bearings that generally have roller or balls confined by an inner and outer ring to relieve friction in/on/around rotating/moving mechanisms.

Possible NAICS Codes
332991 – Ball and Roller Bearing Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
336411 – Aircraft Manufacturing
336412 – Aircraft Engine and Engine Parts Manufacturing
333618 – Other Engine Equipment Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
331523 – Nonferrous Metal Die-Casting Foundries

Includes
Liquid Level Float Instruments; Revolution Counters; Speedometers; Rotation Measuring Instruments and Apparatus; Oxygen Flow Indicators; Tachometers, including Engine Tachometers.

Excludes
Combination Instruments; (FSC 6695); Meteorological Instruments (FSC 6660); and Automatic Control Valves (FSG 48).

Possible NAICS Codes
334519 – Other Measuring and Controlling Device Manufacturing
334514 – Totalizing Fluid Meter and Counting Device Manufacturing
334513 – Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables
333618 – Other Engine Equipment Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
334610 – Manufacturing and Reproducing Magnetic and Optical Media
333120 – Construction Machinery Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
424420 – Packaged Frozen Food Merchant Wholesalers

Description
Bushings, Rings, Shims and Spacers

Includes
Externally Threaded Rings; Keyed and Serrated Lock Rings; Dee Rings; Instrument Retaining Rings; Shim Sets and Assortments; Plate Spacers; Ring Spacers; Sleeve Spacers; Stepped Spacers; Spacer Sets and Assortments; Sleeve Bushings; Machine Threaded Bushings; Machine Threaded Plugs.

Excludes
Sleeve Bearings (FSC 3120); Pipe Threaded Plugs (FSC 4730); Piston Rings (FSC 2520, 2805, 2810, 2815, 2825, 2990, 3040, 4310 and 4820); Retaining Rings (FSC 5325); Shim Stock (FSC 9515).

Notes
All items, including specially designed, will be classified in this FSC. a. A bushing is cylindrical in shape, hollow, and designed primarily to be inserted into a hole to reduce the effective inside diameter of the hole, and to protect the body structure about the hole, and to protect the body structure about the hole from damage resulting from stress, strain, and vibration. b. A ring is cylindrical in shape, usually flat with a center hole. Rings are multi-applicational. See specific item name for designated usage. c. A shim is a thin, sometimes tapered, piece of material used to fill in space between things. See specific item name for dimensional parameters. d. A spacer is a device for holding two members at a given distance from each other.

Possible NAICS Codes
332510 – Hardware Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
336411 – Aircraft Manufacturing
332119 – Metal Crown, Closure, and Other Metal Stamping (except Automotive)
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333618 – Other Engine Equipment Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
332439 – Other Metal Container Manufacturing

Includes
Control Assemblies, Push-Pull; Brace, Positioning Cargo Ramp Stowed on Board; Cockpit Mounted Control Quadrants; Actuators, Electromechanical and Mechanical; Ventilators; Relief Tubes; Map Holders; Aerial Glider Towing Accessories Attached to Aircraft; Belts, Safety and Lap; Harness, Shoulder and Safety; Litter Attaching Supports; Electric Windshield Wipers; Aircraft Onboard Inert Gas Generators; Aircraft Furniture; Aircraft Mounted Winches and Hoists; In-Flight Refueling System Components, including Fuel Components; Aircraft Curtains; Cable Tension Regulators; Sun Visors; Rear-View Mirrors; Mechanical Transmissions, Gearboxes and Constant Speed Drives Specially Designed for Aircraft.

Excludes
Engine Mounted Control Assemblies; Fitted Covers, Aircraft Pylons; Helicopter Rotor Brake System Components; Helicopter Automatic Stabilization Equipment.

Possible NAICS Codes
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
336411 – Aircraft Manufacturing
488190 – Other Support Activities for Air Transportation
336412 – Aircraft Engine and Engine Parts Manufacturing

Includes
Knobs, including Calibrated Knobs; Dials, Scale.

Possible NAICS Codes
327999 – All Other Miscellaneous Nonmetallic Mineral Product Manufacturing
333618 – Other Engine Equipment Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
332119 – Metal Crown, Closure, and Other Metal Stamping (except Automotive)
332312 – Fabricated Structural Metal Manufacturing
336411 – Aircraft Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332510 – Hardware Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing

Includes
Transfer Transmission Assemblies; Clutch Assemblies; Universal Joints; Propeller Shafts; Automotive Torque Converters; Power Takeoffs.

Possible NAICS Codes
336350 – Motor Vehicle Transmission and Power Train Parts Manufacturing
333618 – Other Engine Equipment Manufacturing
333613 – Mechanical Power Transmission Equipment Manufacturing
332510 – Hardware Manufacturing
336211 – Motor Vehicle Body Manufacturing
333120 – Construction Machinery Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
336992 – Military Armored Vehicle, Tank, and Tank Component Manufacturing
336390 – Other Motor Vehicle Parts Manufacturing

Possible NAICS Codes
332510 – Hardware Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
332912 – Fluid Power Valve and Hose Fitting Manufacturing
488190 – Other Support Activities for Air Transportation
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing

Includes
Diving and Salvage Apparatus, including Pressurized Divers Suits; Rescue Nets, Buoyant; Inflatable Life Vests; Life Rafts.

Excludes
Lifesaving Boats (FSC 1940).

Possible NAICS Codes
339999 – All Other Miscellaneous Manufacturing
423850 – Service Establishment Equipment and Supplies Merchant Wholesalers
333310 – Commercial and Service Industry Machinery Manufacturing
326299 – All Other Rubber Product Manufacturing