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 Mechanical Power Transmission Equipment.

Which NATO Supply Classification Group is NSC 3020 in?

NSC 3020is in NATO Supply Classification Group (NSG) 30 which contains Mechanical Power Transmission Equipment.

What is a Silent Chain?

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?

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?

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?

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 Link?

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.

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?

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?

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?

An Internal Gear (GEAR,INTERNAL) is a gear with teeth formed on the inner surface of a cylinder or cone.

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.

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?

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?

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?

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?

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?

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 Matched Bevel Gear Set?

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?

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?

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?

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 Spur Antibacklash Gear?

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 Spur Gear Sector?

A Spur Gear Sector (GEAR SECTOR,SPUR) is a gear sector with complements of spur gear teeth.

What is a Leaf Chain?

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 a Gear Cluster?

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?

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.

What is a Timing Belt Pulley?

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?

A Sprocket Shaft is an item consisting of a shaft and one or more integral SPROCKET WHEEL.

What is a Roller Chain Assembly?

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 Drive Motion Gear?

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 Flywheel Ring Gear?

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?

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?

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.

Gears, Pulleys, Sprockets, and Transmission Chain - United Kingdom (UK)

Federal Supply Class (FSC): 3020

NATO Supply Classification Class (NSC): 3020

Federal Supply Group (FSG): 30 Mechanical Power Transmission Equipment

NATO Supply Classification Group (NSG): 30 Mechanical Power Transmission Equipment

Items Managed by United Kingdom (UK) - NCB is 99

Page 3 of 51

NSN Format for Gears, Pulleys, Sprockets, and Transmission Chain
Codified by United Kingdom

30	20	99	XXX
Group FSG	Class	NCB	Identifier
FSC Federal Supply Class		NIIN
NSN

NATO Supply Class 3020 is a classification within NATO Supply Group 30, which is dedicated to Mechanical Power Transmission Equipment.

NATO Supply Class 3020 specifically focuses on Gears, Pulleys, Sprockets, and Transmission Chain. These components play a crucial role in the mechanical power transmission process, enabling the transfer of power from one component to another within a system.

Gears are rotating mechanical devices with teeth that mesh with other gears to transmit power and motion. They are commonly used in various applications, such as automobiles, machinery, and industrial equipment.

Pulleys are wheel-like devices with a grooved rim designed to support and guide belts or ropes. They are used to transmit power and change the direction of force in systems like conveyor belts, elevators, and engines.

Sprockets are toothed wheels that engage with a chain or belt to transmit power and motion. They are commonly found in bicycles, motorcycles, and industrial machinery.

Transmission chains are flexible, linked chains that transmit power between two or more sprockets. They are commonly used in motorcycles, bicycles, and industrial machinery.

In summary, NATO Supply Class 3020 encompasses gears, pulleys, sprockets, and transmission chains, which are essential components in mechanical power transmission systems.

Frequently Asked Questions(FAQ) for Federal Supply Class 3020

Supply Items Included in Federal Supply Class 3020

Stock Items From Supply Class 3020 Page 3 of 51