Gears, Pulleys, Sprockets, and Transmission Chain
Federal Supply Class (FSC): 3020
NATO Supply Classification Class (NSC): 3020
Group Description: Mechanical Power Transmission Equipment
Federal Supply Group (FSG): 30
NATO Supply Classification Group (NSG): 30
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Includes Power Transmission Chain; Matched Gear Sets.
Excludes Reduction Gears (FSC 3010).
Frequently Asked Questions (FAQ) for Federal Supply Class 3020
- What is Federal Supply Class 3020?
- FSC 3020 is the Federal Supply Class (formally known as NATO Supply Classification Class NSC 3020) in the USA for supply items codified in the category of Gears, Pulleys, Sprockets, and Transmission Chain.
- What is NATO Supply Classification Class 3020?
- NSC 3020 is the NATO Supply Classification Class (also known as Federal Supply Class FSC 3020 in the USA) for supply items codified in the category of Gears, Pulleys, Sprockets, and Transmission Chain.
- Which Federal Supply Group is FSC 3020 in?
- FSC 3020 is in Federal Supply Group (FSG) 30 which contains .
- Which NATO Supply Classification Group is NSC 3020 in?
- NSC 3020 is in NATO Supply Classification Group (NSG) 30 which contains .
Supply Items Included in Federal Supply Class 3020
- What is a Block Chain? 153 Items
- A Block Chain (CHAIN,BLOCK) is a power transmission chain, consisting of laminated or solid blocks and alternate side plates held together by pins and designed in such a manner as to conform to the teeth of a sprocket wheel over which it runs.
- What is a Silent Chain? 186 Items
- A Silent Chain (CHAIN,SILENT) is a flexible mechanical device consisting of inverted tooth links, with or without guide links, and used for power transmission. The links are joined by pins and mate with the sprocket teeth with a sliding action. Excludes flexible mechanical devices specifically designed for use with COUPLING, SHAFT, FLEXIBLE.
- What is a Sprocket Wheel? 6414 Items
- A Sprocket Wheel is a toothed wheel whose teeth or sprockets are designed to be engaged with the links of a pitch chain, track, or the like. It is usually used for transmitting power.
- What is a Roller Chain? 3185 Items
- A Roller Chain (CHAIN,ROLLER) is a flexible mechanical device consisting of one or more rows of links used for conveying or power transmission. The link side plates are flat or offset and are spaced apart by rollers, bushings and/or pins. The chain mates with a sprocket with an articulating action. The non-rotating bushing type chain is limited to that designated by the American National Standards Institute as "roller chain". Excludes CHAIN, BLOCK.
- What is a Chain Spring Clip? 39 Items
- A Chain Spring Clip (CLIP,SPRING,CHAIN) is a platelike retaining spring which snaps over pin ends to lock the link plates of drive chain in place.
- What is a Roller Chain Connecting And Offset Link Set? 13 Items
- A Roller Chain Connecting And Offset Link Set (LINK SET,CONNECTING AND OFFSET,ROLLER CHAIN) is two separate connecting devices consisting of a LINK, DETACHABLE LINK CHAIN and LINK, ROLLER CHAIN not assembled as a combination link.
- What is a Roller Chain Link? 877 Items
- A Roller Chain Link (LINK,ROLLER CHAIN) is an assembled unit of a CHAIN, ROLLER consisting of side plates, roller(s), bushing(s), or pin(s). It may be a single or double pitch. Links containing bushings without rollers shall be as designated by the American National Standards Institute as "roller chain." Excludes LINK, CHAIN (as modified); and PULLEY, SASH.
- What is a Chain Link Plate? 107 Items
- A Chain Link Plate (PLATE,CHAIN LINK) is a side bar of various shapes forming one of the tension members of a pin link, roller chain link, or silent chain link.
- What is a Gear Rack? 1310 Items
- A Gear Rack is a bar-like item with gear teeth on one face for engaging with a spur, bevel, or worm gear, or the like. It is specifically designed for straight line motion.
- What is a Bevel Gear? 5762 Items
- A Bevel Gear (GEAR,BEVEL) is a gear in the form of a frustum of a cone, with straight, skewed, or curved teeth, cut on the external face. See also GEAR, ANTIBACKLASH, BEVEL.
- What is a Helical Gear? 8555 Items
- A Helical Gear (GEAR,HELICAL) is a gear, cylindrical in form, with teeth on the outer surface at an angle to the axis of the gear. See also GEAR, ANTIBACKLASH, HELICAL:
- What is an Internal Gear? 1838 Items
- An Internal Gear (GEAR,INTERNAL) is a gear with teeth formed on the inner surface of a cylinder or cone.
- What is a Spur Gear? 38597 Items
- A Spur Gear (GEAR,SPUR) is a gear, cylindrical in form, with straight teeth on the outer surface parallel to the axis of the gear. See also GEAR, ANTIBACKLASH, SPUR. For bulk material, see ROD, PINION.
- What is a Worm Gear? 2317 Items
- A Worm Gear (GEAR,WORM) is a gear with teeth on its outer surface in the form of helical threads.
- What is a Worm Wheel Gear? 1521 Items
- A Worm Wheel Gear (GEAR,WORM WHEEL) is a gear, cylindrical in form, with spiral teeth designed to mesh with the thread forms of a GEAR (1), WORM. See also GEAR, ANTIBACKLASH, WORM WHEEL.
- What is a Groove Pulley? 11673 Items
- A Groove Pulley (PULLEY,GROOVE) is a pulley with one or more grooved faces or rims of the same diameter. For pulleys encased in a shell or frame, see BLOCK, TACKLE.For items specifically designed for aviation, see PULLEY(1), GROOVE, AVIATION.
- What is a Cone Pulley? 337 Items
- A Cone Pulley (PULLEY,CONE) is a pulley having two or more adjoining grooved, flat or crowned faces in steps of different diameters or one having a single tapered face. For pulleys encased in a shell or frame, see BLOCK, TACKLE.
- What is a Flat Pulley? 1828 Items
- A Flat Pulley (PULLEY,FLAT) is a pulley with a straight or crowned face. The item may include belt aligning flange(s). Excludes PULLEY, CONE. For pulleys encased in a shell or frame, see BLOCK, TACKLE.
- What is an Engine Starter Rope Pulley? 257 Items
- An Engine Starter Rope Pulley (PULLEY,ENGINE STARTER ROPE) is a grooved or flat faced pulley having one or more notches in the rim or flange for attaching a rope or cable for the purpose of cranking an engine.
- What is a Pinion Rod? 277 Items
- A Pinion Rod (ROD,PINION) is a solid, cylindrically shaped item having a uniform cross section throughout its entire length with a 360 degree complement of straight, spur type teeth on its periphery. Refers to bulk material only. For items having a bore, hub, or mounting facilities, see GEAR, SPUR.
- What is a Matched Bevel Gear Set? 1526 Items
- A Matched Bevel Gear Set (GEAR SET,BEVEL,MATCHED) is a grouping of two or more or any combination of GEAR, BEVEL; GEARSHAFT, BEVEL; or GEAR CLUSTER, BEVEL which have been matched together for a given characteristic within a specified tolerance. Includes only those gears designed and tested to accomplish a specifically desired function.
- What is a Matched Helical Gear Set? 493 Items
- A Matched Helical Gear Set (GEAR SET,HELICAL,MATCHED) is a grouping of two or more or any combination of GEAR, HELICAL; GEARSHAFT, HELICAL; or GEAR CLUSTER, HELICAL which have been matched together for a given characteristic within a specified tolerance. Includes only those gears designed and tested to accomplish a specifically desired function.
- What is a Matched Spur Gear Set? 734 Items
- A Matched Spur Gear Set (GEAR SET,SPUR,MATCHED) is a grouping of two or more or any combination of GEAR, SPUR; GEARSHAFT, SPUR and/or GEAR CLUSTER, SPUR which have been matched together for a given characteristic within a specified tolerance. Includes only those gears designed and tested to accomplish a specifically designed function.
- What is a Matched Worm And Worm Wheel Gear Set? 439 Items
- A Matched Worm And Worm Wheel Gear Set (GEAR SET,WORM AND WORM WHEEL,MATCHED) is a grouping of one or more GEAR, WORM and GEAR, WORM WHEEL and/or GEARSHAFT, WORM WHEEL which have been matched together for a given characteristic within a specified tolerance. Includes only those gears designed and tested to accomplish a specifically desired function.
- What is a Bevel Antibacklash Gear? 43 Items
- A Bevel Antibacklash Gear (GEAR,ANTIBACKLASH,BEVEL) is an item having one fixed gear and one free gear, both having the same complement of bevel gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.
- What is a Helical Antibacklash Gear? 42 Items
- A Helical Antibacklash Gear (GEAR,ANTIBACKLASH,HELICAL) is an item having one fixed gear and one free gear, both having the same complement of helical gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.
- What is a Spur Antibacklash Gear? 1241 Items
- A Spur Antibacklash Gear (GEAR,ANTIBACKLASH,SPUR) is an item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.
- What is a Worm Wheel Antibacklash Gear? 30 Items
- A Worm Wheel Antibacklash Gear (GEAR,ANTIBACKLASH,WORM WHEEL) is an item having one fixed gear and one free gear, both having the same complement of worm wheel gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.
- What is a Body Hub? 25 Items
- A Body Hub (HUB,BODY) is a cylindrical shoulder type item designed to be mounted and secured directly on a shaft or axle to position and retain on its body a gear(s), wheel(s), or the like. Items must have a method of securing directly to the shaft; however, a pilot hole drilled in or through the wall of the shoulder may be considered a method of securing; or by compressing the slotted hub end on the shaft by a hub clamp, which may or may not be included. Excludes BEARING, SLEEVE; BUSHING, SLEEVE; and COLLAR, SHAFT.
- What is a Spur Gear-Slip Clutch? 115 Items
- A Spur Gear-Slip Clutch (GEAR-SLIP CLUTCH,SPUR) is a slip clutch gear with complements of spur gear teeth.
- What is a Bevel Gear Sector? 80 Items
- A Bevel Gear Sector (GEAR SECTOR,BEVEL) is a gear sector with complements of bevel gear teeth.
- What is a Helical Gear Sector? 64 Items
- A Helical Gear Sector (GEAR SECTOR,HELICAL) is a gear sector with complements of helical gear teeth.
- What is a Spur Gear Sector? 1027 Items
- A Spur Gear Sector (GEAR SECTOR,SPUR) is a gear sector with complements of spur gear teeth.
- What is a Worm Wheel Gear Sector? 193 Items
- A Worm Wheel Gear Sector (GEAR SECTOR,WORM WHEEL) is a gear sector with complements of worm wheel teeth.
- What is a Detachable Link Chain? 98 Items
- A Detachable Link Chain (CHAIN,DETACHABLE LINK) is a flexible mechanical device consisting of cast or stamped links without pins, bushings or rollers. The links may be assembled or disassembled when flexed to an acute angle.
- What is a Pintle Chain? 41 Items
- A Pintle Chain (CHAIN,PINTLE) is a flexible mechanical device consisting of links, with offset sidebars and rollerless bushings cast as one piece. The links are coupled with pins.
- What is a Detachable Link Chain Link? 53 Items
- A Detachable Link Chain Link (LINK,DETACHABLE LINK CHAIN) is a component of a CHAIN, DETACHABLE LINK consisting of a single cast or stamped piece. One end serves as a rollerless bushing and the other end as a pin. They may be assembled or disassembled when flexed to an acute angle.
- What is a Pintle Chain Link? 23 Items
- A Pintle Chain Link (LINK,PINTLE CHAIN) is a component of a CHAIN, PINTLE consisting of offset sidebars and a rollerless bushing cast as one piece. The end opposite the rollerless bushing contains a connecting pin.
- What is a Leaf Chain? 250 Items
- A Leaf Chain (CHAIN,LEAF) is a flexible mechanical device consisting of flat leaf plates assembled with pins or rivets to form a chain. The chain uses a flanged sheave in lieu of a sprocket. Each end has a termination hole through which securing pins are inserted when the chain terminations are attached. Excludes CHAIN, SILENT; and CHAIN, BLOCK.
- What is an Internal Gear Sector? 43 Items
- An Internal Gear Sector (GEAR SECTOR,INTERNAL) is a gear sector with teeth formed on the inner surface.
- What is a Gear Cluster? 4935 Items
- A Gear Cluster is a cylindrical item having a full 360 degree (6.282 radians) complement of teeth on two or more surfaces. It may be a one-piece casting or composed of two or more separate items firmly held together by welding, rivets, pins, or the like, to form a single unit. It is designed to mount on a shaft. For items consisting of a shaft with an integral complement(s) or gear teeth, see GEARSHAFT (as modified). Excludes GEAR SUBASSEMBLY, SPEED DECREASER.
- What is a Cable Chain? 241 Items
- A Cable Chain (CHAIN,CABLE) is a flexible mechanical device consisting of one or more rows of cast or stamped links without side plates or rollers. The links may be replacable by splicing. Excludes metallic chains and belts.
- IDLER SPROCKET,MOUNT BOOM 17 Items
- CABLE TENSIONING ASSEMBLY,ELEVATOR WORK CAGE 26 Items
- GEAR,CLUTCH 205 Items
- PULLEY,TAIL SHAFT 92 Items
- GEAR OPERATOR,ROTARY 95 Items
- SPROCKET WHEEL SEGMENT,DRIVE UNIT 101 Items
- What is a Gear Sector Cluster? 27 Items
- A Gear Sector Cluster is a toothed device resembling a portion of a gear containing two or more complements of teeth. Each has fewer than 360 degrees (6.282 radians) of gear teeth. Excludes GEAR SECTOR (1), (as modified), GEAR RACK and RATCHET WHEEL.
- What is a Timing Belt Pulley? 700 Items
- A Timing Belt Pulley (PULLEY,TIMING BELT) is a pulley with regularly spaced grooves parallel to the pulley axis on the face. It is designed to be used for timing purposes such as to synchronize the igintion spark with the completion of the compression stroke of the piston.
- What is a Sprocket Shaft? 242 Items
- A Sprocket Shaft is an item consisting of a shaft and one or more integral SPROCKET WHEEL.
- What is a Bevel Gear And Shaft Assembly? 24 Items
- A Bevel Gear And Shaft Assembly (GEAR AND SHAFT ASSEMBLY,BEVEL) is an unenclosed assembly of a bevel gear(s) and a shaft(s). The gear(s) and shaft(s) must be capable of being separated from each other. Excludes GEARSHAFT (as modified) and GEAR CLUSTER (as modified).
- What is a Chain Case? 38 Items
- A Chain Case (CASE,CHAIN) is a device designed to totally enclose a driving chain and may incorporate oil bath or other lubrication features.
- What is a Roller Chain Assembly? 102 Items
- A Roller Chain Assembly (CHAIN ASSEMBLY,ROLLER) is a specific length of non-reversible roller chain with end fittings. For items without end fittings see CHAIN, ROLLER.
- What is a Chain Anchor? 115 Items
- A Chain Anchor (ANCHOR,CHAIN) is a metallic device designed to secure various styles of chain by use of a link and pin(s). Item may be threaded on one end.
- What is a Pulley Insert? 60 Items
- A Pulley Insert (INSERT,PULLEY) is a circular item of various configurations consisting of one or more pieces. It is designed to accomodate different size cables on trawler/core and oceanographic winches.
- What is a Drive Motion Gear? 2165 Items
- A Drive Motion Gear (GEAR,DRIVE MOTION) is a gear, cylindrical or conical in form, with teeth on the outer surface used for the accurate transmission of motion.
- What is a Worm Gear Assembly? 144 Items
- A Worm Gear Assembly (GEAR ASSEMBLY,WORM) is an assembled unit consisting of a worm type gear, bearing(s), coupler(s), coupling(s), and all necessary mounting hardware.
- What is a Flywheel Ring Gear? 203 Items
- A Flywheel Ring Gear (GEAR,RING,FLYWHEEL) is an item designed to transmit motion from the starter to the flywheel in an engine.
- What is a Ratchet Wheel? 586 Items
- A Ratchet Wheel is a circular wheel having teeth with which a reciprocating pawl engages to turn the wheel forward and prevent backward motion, or a stationary pawl which engages the wheel to prevent backward motion.
- What is a Mechanical Drive Guard? 2510 Items
- A Mechanical Drive Guard (GUARD,MECHANICAL DRIVE) is a safety device fabricated of rigid or semirigid material formed in various shapes. It may be fabricated from a single piece of material, and contains brackets, holes, or other means of attachments. It is designed to partially or fully inclose gear(s), pulley(s), sprocket(s), and the like.
Stock Items with Pictures
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