FSG 30 Mechanical Power Transmission Equipment

Question 1

What is Federal Supply Group 30?

Accepted Answer

FSG 30 is the Federal Supply Group (formally known as NATO Supply Classification Group NSG 30) in the USA for supply items codified in the category of Mechanical Power Transmission Equipment.

Question 2

What is NATO Supply Classification Group 30?

Accepted Answer

NSG 30 is the NATO Supply Classification Group (also known as Federal Supply Group FSG 30 in the USA) for supply items codified in the category of Mechanical Power Transmission Equipment.

Question 3

Which Federal Supply Classes are in FSG 30?

Accepted Answer

FSG 30 contains the following Federal Supply Classes (FSC) (formally known as NATO Supply Classification Class [NSC]): 3030,3040,3010,3020

Question 4

Which NATO Supply Classification Classes are in NSG 30?

Accepted Answer

NSG 30 contains the following NATO Supply Classification Classes (NSC) (also known as Federal Supply Class [FSC] in the USA): 3030,3040,3010,3020

Question 5

When did the transition from Federal Supply Groups (FSG) to NATO Supply Groups (NSG) occur?

Accepted Answer

The transition from Federal Supply Groups (FSG) to NATO Supply Groups (NSG) occurred on January 1, 1997. This change was implemented to align the classification and coding systems used by NATO member countries for military supplies and equipment. Federal Supply Groups (FSG) are now obsolete.

Question 6

What is a Belt Lacing Pin?

Accepted Answer

A Belt Lacing Pin (PIN,BELT LACING) is a round, twisted or corrugated item, used as a connector for the ends of a belt by passing through center of meshed, curved ends of steel hooks imbedded in belt ends to produce an endless belt for power transmission.

Question 7

What is a Pin Belt Lacing?

Accepted Answer

A Pin Belt Lacing (LACING,BELT,PIN) is an item consisting of two lengths of toothed metal, or two series of wire hooks, to be attached to the ends of industrial belting in order to form an endless belt when joined by a hinge pin. May be furnished with hinge pin.

Question 8

What is a Leather Belt Lacing?

Accepted Answer

A Leather Belt Lacing (LACING,BELT,LEATHER) is a strip cut from tanned or untanned animal hide, the width being greater than the thickness, and used to join the ends of a conveyor or driving belt. Excludes LACING, BELT, PIN; and LACES, FOOTWEAR.

Question 9

What is a Plate Belt Fastener?

Accepted Answer

A Plate Belt Fastener (BELT FASTENER,PLATE) is an item consisting of two plates with bolt holes, and sufficient bolts and nuts to form, when assembled, a single belt fastening unit. Used in series with other such units to fasten together ends of power transmission or conveyor belts and to repair belt rips.

Question 10

What is a Matched Set V Belts?

Accepted Answer

A Matched Set V Belts (BELTS,V,MATCHED SET) is a factory matched set of two or more belts.

Question 11

What is a Positive Drive Belt?

Accepted Answer

A Positive Drive Belt (BELT,POSITIVE DRIVE) is a flat internally toothed belt or a round belt with protuding pins, designed to engage with corresponding teeth or corresponding grooves on the sprockets over which they run.

Question 12

What is a Matched Set Round Belts?

Accepted Answer

A Matched Set Round Belts (BELTS,ROUND,MATCHED SET) is a factory matched set of two or more BELT (2), ROUND.

Question 13

What is a Matched Set Positive Drive Belts?

Accepted Answer

A Matched Set Positive Drive Belts (BELTS,POSITIVE DRIVE,MATCHED SET) is a set consisting of two or more matching BELTS, POSITIVE DRIVE items.

Question 14

What is a Push-Pull Control Assembly?

Accepted Answer

A Push-Pull Control Assembly (CONTROL ASSEMBLY,PUSH-PULL) is a control consisting of a wire, wire rope, or a center load rail with ball bearings, within a flexible conduit. One end must have a threaded sleeve for mounting to a wall, bulkhead, or handle, or clevis. It is used to operate or control, either manually or mechanically a mechanical device. It may include such attaching devices as nut(s), washer(s), clevis, bracket(s), and/or the like. For items designed to transmit rotary motion, see SHAFT ASSEMBLY, FLEXIBLE.

Question 15

What is a Transmission Fluid Cooler?

Accepted Answer

A Transmission Fluid Cooler (COOLER,FLUID,TRANSMISSION) is an apparatus designed to lower the temperature of the fluid in power transmission equipment by bringing it into proximity with another fluid of lower temperature so that heat transfer is effected by conduction through the walls of separating chambers. Excludes air conditioning equipment, refrigeration equipment, and radiators.

Question 16

What is a Dual Disk Brake?

Accepted Answer

A Dual Disk Brake (BRAKE,DUAL DISK) is a brake consisting essentially of the following:  a. A single piece or divided cylinder housing designed to be mounted on the torque flange of an axle. The cylinder housing has a slot or groove through which the DISK, BRAKE passes. It contains a piston(s) or push rod(s) which provides the hydraulic or mechanical force to press the LINING, FRICTION against the DISK, BRAKE.  b. LINING, FRICTION.  c. Two DISK, BRAKE designed to be keyed or rigidly attached to a wheel or rotating shaft.

Question 17

What is a Single Disk Brake?

Accepted Answer

A Single Disk Brake (BRAKE,SINGLE DISK) is a brake consisting essentially of the following&#58;  a. A single piece or divided cylinder housing designed to be mounted on the torque flange of an axle. The cylinder housing has a slot or groove through which the DISK, BRAKE passes. It contains a piston&#40;s&#41; or push rod&#40;s&#41; which provides the hydraulic or mechanical force to press the LINING, FRICTION against the DISK, BRAKE.  b. LINING, FRICTION.  c. A DISK, BRAKE designed to be keyed or rigidly attached to a wheel or rotating shaft.

Question 18

What is an Expander Tube Brake?

Accepted Answer

An Expander Tube Brake (BRAKE,EXPANDER TUBE) is a brake consisting essentially of the following:  a. A frame designed to fit over and be attached to the torque flange of the axle, and having provisions for housing an expander tube and brake blocks.  b. An expander tube which is a flat rubber tube designed to be filled with brake fluid and thereby force brake blocks against the brake drum.  c. Brake blocks which may be cemented to the expander tube or fitted into the frame above the expander tube.

Question 19

What is a Multiple Disk Brake?

Accepted Answer

A Multiple Disk Brake (BRAKE,MULTIPLE DISK) is a brake consisting essentially of the following:  a. A brake anchor bracket, also called a carrier assembly, which is the basic unit of the brake. It is designed to be attached to the torque flange of the axle and is also the part upon which the other components of the brake are assembled.  b. A floating hydraulically actuated annular piston, or an equivalent mechanical device, used for applying braking pressure.  c. Metallic disks keyed to rotate with the wheel alternated with nonrotating disks keyed to the anchor bracket. See also BRAKE, SEGMENTED ROTOR.

Question 20

What is a Segmented Rotor Brake?

Accepted Answer

A Segmented Rotor Brake (BRAKE,SEGMENTED ROTOR) is a brake consisting essentially of the following:  a. A brake anchor bracket, also called a carrier assembly, which is the basic unit of the brake. It is designed to be attached to the torque flange of the axle and is also the part upon which the other components of the brake are assembled.  b. A floating hydraulically actuated annular piston, or an equivalent mechanical device, used for applying braking pressure.  c. Segments of brake lining attached to the nonrotating disks.

Question 21

What is a Shoe Type Brake?

Accepted Answer

A Shoe Type Brake (BRAKE,SHOE TYPE) is a brake consisting essentially of the following:  a. A torque spider which is a disklike metal part designed to fit over and be attached to the torque flange of the axle.  b. One or more brake shoes with brake lining attached.  c. A hydraulic cylinder(s) or mechanical linkage to provide the force by which the brake shoe is pressed against the brake drum.

Question 22

What is a Flexible Shafting?

Accepted Answer

A Flexible Shafting (SHAFTING,FLEXIBLE) is an item consisting of consecutive layers of wire, wound in opposite directions, one upon the other, to obtain extreme flexibility, either with or without an inclosing casing. It is designed to transmit power or to operate remote controls by rotary motion. This is bulk shafting only and does not include flexible shafts with attachments or special terminations.

Question 23

What is a Flexible Shaft Assembly Core?

Accepted Answer

A Flexible Shaft Assembly Core (CORE,FLEXIBLE SHAFT ASSEMBLY) is a specific length of SHAFTING, FLEXIBLE with squared end(s) and/or crimped on tip(s) with or without fittings attached, designed so as to function inside the pliable protective casing of a SHAFT ASSEMBLY, FLEXIBLE.

Question 24

What is a Flexible Shaft Assembly Casing?

Accepted Answer

A Flexible Shaft Assembly Casing (CASING,FLEXIBLE SHAFT ASSEMBLY) is a round, hollow, flexible item made of closely wound wire, plastic, or other flexible material with connections to permit stationary attachment of each end. It is used to protect and guide the core of a SHAFT ASSEMBLY, FLEXIBLE or CONTROL ASSEMBLY, PUSH-PULL.

Question 25

What is a Differential Spider?

Accepted Answer

A Differential Spider (SPIDER,DIFFERENTIAL) is a spider with four radiating arms, designed to form a connection between two shafts, which allows one shaft to rotate while the other is stopped or rotates at a different speed or direction.

Question 26

What is a Breather?

Accepted Answer

A Breather is a mechanical device designed to permit a free flow of air into and out of an enclosure, usually used on engine crankcase, vehicular differentials and transmissions, pumps, compressors, and the like.  See also CAP, VENT, FUEL STORAGE TANK.  excludes VENTALATOR (as modified).

Question 27

What is a Brake Drum?

Accepted Answer

A Brake Drum is a circular shaped metal item designed to be connected to a machine or vehicle shaft or wheel and used to retard, stop or prevent motion by the application of pressure exerted by brake(s) or band(s).

Question 28

What is a Friction Lining?

Accepted Answer

A Friction Lining (LINING,FRICTION) is a fibrous and/or metallic material with or without binders and/or compounds, cut or molded to a specific size. It may be a segment or a complete lining. It is usually designed to be fastened to a shoe, disk, band, cone, or the like, but may be installed without fastening. It provides a friction surface for transmitting, retarding, or stopping motion. Excludes LINING MATERIAL, FRICTION.

Question 29

What is a Piston Ring?

Accepted Answer

A Piston Ring (RING,PISTON) is a circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes PACKING, PREFORMED; RETAINER, OIL SEAL; RETAINER, PACKING; RING, RETAINING; RING WIPER; and SEAL RING, METAL.

Question 30

What is a Shaft Collar?

Accepted Answer

A Shaft Collar (COLLAR,SHAFT) is an item designed to be mounted around a shaft to limit axial movement of the shaft and/or its assembled parts. It is secured directly to the shaft by use of a setscrew(s), pin(s), or the like, which may be a part of the item of supply. A pilot hole drilled in or through the wall(s) for drilling and pinning at application may be considered a method of securing. Solid items have a bearing surface on one or both end(s) perpendicular to the axis. For items designed to be mounted around the extended hub portion of a mounted item on a shaft or clamp around a shaft, see CLAMP, HUB. See also BEARING, SLEEVE; BUSHING, SLEEVE; SPACER, SLEEVE; and COUPLING, SHAFT, RIGID.

Question 31

What is a Brake Lining Kit?

Accepted Answer

A Brake Lining Kit is a collection of items consisting of brake linings of specific size(s) together with rivets and/or bolts for fastening the lining to the original brake shoes. Excludes brake shoe kits containing the assembled brake shoes complete with linings, and also brake lining packaged in sheets or rolls.

Question 32

What is a Piston Ring Set?

Accepted Answer

A Piston Ring Set (RING SET,PISTON) is two or more complete RING, PISTON grouped for a single piston or for all pistons of an internal combustion engine, air compressor, or the like.

Question 33

What is a Ball Joint?

Accepted Answer

A Ball Joint is an item in which the end of one member is partly spherical and fits into a corresponding spherical cavity in the other member, thus permitting a relative angular movement. Excludes items specifically designed for vehicular steering and torsion application.

Question 34

What is a Double Ball Joint?

Accepted Answer

A Double Ball Joint (BALL JOINT,DOUBLE) is an assembly consisting of two (2) BALL JOINT. Excludes items specifically designed for vehicular steering and torsion application.

Question 35

What is a Hydraulic Control Receiver-Transmitter?

Accepted Answer

A Hydraulic Control Receiver-Transmitter (RECEIVER-TRANSMITTER,HYDRAULIC CONTROL) is an item consisting of one or more hydraulic receivers and transmitters designed to transmit hydraulic pressure from the transmitter to the receiver, for control of mechanical action.

Question 36

What is a Worm Shaft?

Accepted Answer

A Worm Shaft is a drive shaft having helical thread(s) on a portion of its outer surface, machined bearing surface(s) and facilities for driving (other than a hub) on one or both ends of shaft. Designed to mate with a cam, gear sector, worm wheel, etc. Includes items with bearings. Excludes items having more than one worm complement of helical threads, items with a separate complement of gear teeth, and GEAR, WORM.

Question 37

What is a Pedal Pad?

Accepted Answer

A Pedal Pad (PAD,PEDAL) is an item mounted on a PEDAL, CONTROL or other linkage and designed to prevent slipping during actuation by the foot. The item usually consists of a rubber-like material, conforms in shape and size to the item to be covered, and can be replaced if worn.

Question 38

What is a Control Pedal?

Accepted Answer

A Control Pedal (PEDAL,CONTROL) is an item designed for attachment to a control lever, rod, shaft or the like to facilitate foot movement of the control device. Excludes pedals with integral or attached shafts or arms&#59; PAD, PEDAL&#59; PEDAL, BICYCLE&#59; PEDAL, BASS DRUM&#59; and PEDAL, SOCK, HIGH HAT CYMBAL.

Question 39

What is a Friction Lining Material?

Accepted Answer

A Friction Lining Material (LINING MATERIAL,FRICTION) is a fibrous and/or metallic material with or without binders and/or compounds woven or molded into roll or sheet form of uniform width and thickness and may be fabricated with or without cork inserts. It is intended as the bulk material from which LINING, FRICTION may be fabricated for use on disks, shoes, or bands to provide a friction surface for transmitting, retarding, or stopping motion.

Question 40

What is an Extension Shaft?

Accepted Answer

An Extension Shaft is an item consisting of a length of rigid shafting designed to be coupled to the shaft of items such as variable capacitors, switches, hand cranks and the like. It is specifically designed to increase the length of the original shaft and may also effect a change in the shaft diameter. Includes coupling(s) or has processed end(s) to facilitate the attachment of a coupling device. May have provision for electrically insulating the extension shaft from the other shaft.

Question 41

What is a Flexible Core End Fitting?

Accepted Answer

A Flexible Core End Fitting (END FITTING,FLEXIBLE CORE) is an item designed to be permanently secured to the end of a CORE, FLEXIBLE SHAFT ASSEMBLY to provide a means for attaching or engaging with a driving or driven member.

Question 42

What is a Flexible Casing End Fitting?

Accepted Answer

A Flexible Casing End Fitting (END FITTING,FLEXIBLE CASING) is a fitting designed to be secured to the ends of a CASING, FLEXIBLE SHAFT ASSEMBLY to provide a means by which the casing can be attached to the housing of the driving or driven members, either directly or by a coupling nut, or the like. See also FERRULE, ELECTRICAL CONDUIT.

Question 43

What is a Flexible Casing Coupling Nut?

Accepted Answer

A Flexible Casing Coupling Nut (NUT,COUPLING,FLEXIBLE CASING) is an item of metallic composition with internal threads and an internal seat or shoulder designed for the purpose of joining a flexible casing, such as a CASING, FLEXIBLE SHAFT ASSEMBLY capped with a ferrule and fitting. See also NUT, COUPLING, ELECTRICAL CONDUIT.

Question 44

What is a Flexible Shaft Assembly?

Accepted Answer

A Flexible Shaft Assembly (SHAFT ASSEMBLY,FLEXIBLE) is an item consisting of a casing with fittings and attachments on each end and a spirally wound wire core with formed end(s) and/or crimped on end fittings. It is designed to transmit rotary motion around bends from a motor or other power source to drive various types of equipment, such as tachometers, speedometers, remote controls, instruments, and the like, which are located at an angle and/or distance from the power source. See also CONTROL ASSEMBLY, PUSH-PULL.

Question 45

What is a Shaft Retaining Plate?

Accepted Answer

A Shaft Retaining Plate (PLATE,RETAINING,SHAFT) is a round, square, or rectangular comparatively flat item having a centrally located hole, designed to accommodate and/or support a shaft. It must have drilled and/or tapped holes for mounting purposes. Excludes RETAINER, PACKING; END BELL, ELECTRICAL ROTATING EQUIPMENT.

Question 46

What is a Flexible Drive Shaft?

Accepted Answer

A Flexible Drive Shaft (SHAFT,DRIVE,FLEXIBLE) is an item consisting of a flexible metal rod or SHAFTING, FLEXIBLE with specific terminations, specifically designed to transmit power, operate remote controls, and the like. For items designed to be inclosed in a casing, see CORE, FLEXIBLE SHAFT ASSEMBLY; see also COUPLING, SHAFT, FLEXIBLE.

Question 47

What is a Flexible Control Casing?

Accepted Answer

A Flexible Control Casing (CASING,FLEXIBLE CONTROL) is a round, hollow, flexible item made of closely wound wire which may have a covering. It is used to serve as a guide and support for push-pull or rotating types of controls for various devices. See also HOSE, METAL. For items with end connections, see CASING, FLEXIBLE SHAFT ASSEMBLY.

Question 48

What is a Hydraulic Accumulator?

Accepted Answer

A Hydraulic Accumulator (ACCUMULATOR,HYDRAULIC) is an accumulator in which liquids are stored under pressure for momentary energy in a hydraulic system. Excludes ACCUMULATOR, HYDRAULIC, SQUIB ACTUATED.

Question 49

What is a Pneumatic Accumulator?

Accepted Answer

A Pneumatic Accumulator (ACCUMULATOR,PNEUMATIC) is an accumulator in which gases are stored under pressure for momentary energy in a pneumatic system.

Question 50

What is a Rigid Connecting Link?

Accepted Answer

A Rigid Connecting Link (CONNECTING LINK,RIGID) is an item of various cross-sectional shapes which may be of solid or hollow construction. It is specifically designed for attachment to a lever(s) and/or control(s) to actuate various remote mechanisms. It is one of the following: (1) A one-piece item with or without eyes and/or holes in each end which may have bushings or bearings pressed in the eyes; (2) A one-piece item with both ends processed for terminations, excluding threaded end(s); (3) A two-piece construction type item consisting of a body with both ends processed for terminations and a single end attachment; or (4) A three-piece construction type item consisting of a body and two end attachments. Excludes internal combustion engine type piston connecting rods; DRAG LINK, STEERING; LINK, ANCHOR, BRAKE SHOE; TIE ROD, STEERING; and TURNBUCKLE. For cylindrical shaped externally threaded items without end attachments, see ROD, THREADED END and STUD (as modified).

Question 51

What is a Linear Actuating Cylinder?

Accepted Answer

A Linear Actuating Cylinder (CYLINDER,ACTUATING,LINEAR) is a cylinder designed to house a piston and other necessary component parts of a CYLINDER ASSEMBLY, ACTUATING, LINEAR. Do not use if a more specific name applies.

Question 52

What is a Nonrotating Shaft Eye Bracket?

Accepted Answer

A Nonrotating Shaft Eye Bracket (BRACKET,EYE,NONROTATING SHAFT) is a rigid metal item usually fabricated from steel castings and/or welded steel pieces and designed with one or more hole(s) in line to accompany and hold, align, or support a nonrotating mechanical shaft. It has mounting holes for fastening to a supporting member or main body. It may have provision to accommodate a pin or threaded fastener to hold the shaft in a fixed position.

Question 53

What is a Rotating Shaft Eye Bracket?

Accepted Answer

A Rotating Shaft Eye Bracket (BRACKET,EYE,ROTATING SHAFT) is a rigid metal item usually fabricated from steel castings and/or welded steel pieces and designed with one or more hole(s) in line to accompany and hold, align, or support a mechanical shaft that rotates through an arc not to exceed 360 degrees (6.282 radians). It may have provision to accommodate a bushing or sleeve but usually it has a straight drilled shaft-support hole. Mounting holes are provided for attaching to a supporting member or main body. Excludes HOUSING, BEARING UNIT (as modified).

Question 54

What is a Brake Backing Plate?

Accepted Answer

A Brake Backing Plate (PLATE,BACKING,BRAKE) is a rigid circular shaped metal item with a centrally located aperture. It has mounting holes and is specifically designed to mount and position the components of a BRAKE (as modified). It also serves to prevent dirt and other foreign matter from entering the braking mechanism. Excludes items which are used as a dust shield only.

Question 55

What is a Remote Control Lever?

Accepted Answer

A Remote Control Lever (LEVER,REMOTE CONTROL) is a rigid item usually in the form of an arm of various shapes and cross sections, containing two or more holes so spaced that one serves as a pivot with or without hubs and must have a definite means for securing to a shaft (such as threaded hole for set-screw, keyway(s), splines, serrations or some clamping device). The other hole(s) connect(s) to CONNECTING LINK, RIGID; WIRE ROPE ASSEMBLY, SINGLE LEG; or CLEVIS, ROD END; to provide transmission of movement to other parts of the mechanism. See also BELL CRANK. For manually operated items see LEVER, MANUAL CONTROL.

Question 56

What is a Pawl?

Accepted Answer

A Pawl is a catching device of various shapes and cross sections, which permits motion in only one direction. Designed to engage the teeth or notches of a sector, quadrant, ratchet wheel, or the like. Item is so pivoted that the angle of approach to the interdental engagement causes it to rest more firmly as the reverse load is increased. Item may be spring actuated to cause engagement. Excludes CAM (as modified).

Question 57

What is a Straight Shaft?

Accepted Answer

A Straight Shaft (SHAFT,STRAIGHT) is a straight shaft having two or more of the following conditions: a specified surface finish designation in the range of 1 to 125 microinches (o.o25 to 3.2 micrometers), arithmetical average (aa), machined peripheral flat(s), circular groove (s), keyway(s), splines, threads, or holes. It is not designed for use in aligning by fitting into corresponding holes of another item. It may be drilled for lubricating holes. For items having an integral gear(s) or worm(s), see GEARSHAFT (as modified). For items designed to support rotating members see AXLE(1), STRAIGHT. For items not having the above conditions see PIN, STRAIGHT, HEADLESS. For items having machined ends which constitute steps see SHAFT(1), SHOULDERED; AXLE(1), SHOULDERED; and BOLT, FLUID PASSAGE.

Question 58

What is a Detent Plate?

Accepted Answer

A Detent Plate is a metallic item usually flat, having toothlike projections on the periphery, specifically designed to engage a PAWL for the purpose of regulating and/or locking a brake, clutch lever, or the like, in a definite position.

Question 59

What is a Bell Crank?

Accepted Answer

A Bell Crank is an item in the form of two arms at an angle, having its fulcrum at the apex of the angle, and used to provide a means of changing the direction or varying the intensity of a pushing or pulling force. See also ARM (as modified); and LEVER (as modified).

Question 60

What is a Grease Cap?

Accepted Answer

A Grease Cap (CAP,GREASE) is a cap, usually of metal, designed to retain lubricant and excludes foreign matter from bearings. It is normally used as an end closure on items designed to rotate on a shaft,such as a wheel hub, or fit into a housing at the end of a rotating shaft, or the like. Do not use if a more specific name applies. For items mounted by bolt holes, see COVER, ACCESS.

Question 61

What is a Shouldered Shaft?

Accepted Answer

A Shouldered Shaft (SHAFT,SHOULDERED) is a shaft having two or more different diameters (greater than 0.031 inches (0.79 millimeter)) along its length. It must have one or more of the following conditions: a specified surface finish designation in the range 1 to 125 microinches (0.025 to 3.2 micrometers) arithmetical average (AA), machined peripheral flat(s), circular groove(s), keyway(s), splines, threads, or holes. The ends and/or shoulders may be machined to accommodate bearings, couplings, and the like. It is not designed for use in aligning by fitting into corresponding holes of another item. For items used to support rotating members see AXLE(1), SHOULDERED. For items not having any of the above conditions see PIN, SHOULDER, HEADLESS. Excludes SHAFT(1), STRAIGHT; and AXLE(1), STRAIGHT.

Question 62

What is a Brake Drum Adapter?

Accepted Answer

A Brake Drum Adapter (ADAPTER,BRAKE DRUM) is a rigid circular shaped metal item, with a centrally located aperture. It is specifically designed to mount or secure a brake drum to a wheel hub. It is a component of a brake drum. Excludes PLATE, BACKING, BRAKE.

Question 63

What is a Hydraulic Accumulator Cylinder?

Accepted Answer

A Hydraulic Accumulator Cylinder (CYLINDER,HYDRAULIC ACCUMULATOR) is a cylinder designed to house a piston and other necessary component parts of a hydraulic accumulator.

Question 64

What is a Hub Clamp?

Accepted Answer

A Hub Clamp (CLAMP,HUB) is an item designed to be mounted around the extended hub portion of a gear, wheel, or the like, to retain it securely to a shaft by compressing the slotted hub body. The item may also be used to clamp around a shaft, or the like, to prevent end motion or to retain it in position. Its compression quality is derived from a screw(s) or bolt(s) which may be a part of the item of supply. For items designed to secure directly to a shaft by use of setscrews, pins, or the like, see COLLAR, SHAFT. Excludes CLAMP, LOOP.

Mechanical Power Transmission Equipment

Federal Supply Group (FSG): 30

NATO Supply Classification Group (NSG): 30

NSN Format for Mechanical Power Transmission Equipment

Additional Information for Mechanical Power Transmission Equipment

Belting, Drive Belts, Fan Belts, and Accessories

Miscellaneous Power Transmission Equipment

Torque Converters and Speed Changers

Gears, Pulleys, Sprockets, and Transmission Chain

Frequently Asked Questions (FAQ) for Federal Supply Group 30

Top 20 Supply Items Included in Federal Supply Group 30

Stock Items for FSG 30 Page 2 of 1283