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		                        | National Stock Number:
 3020-00-015-6834
 
 Federal Supply Class:
 3020
 
 National Item Identification Number:
 000156834
 
 Description:
 GEAR,ANTIBACKLASH,SPUR
 
 Detail:
 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.
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 Manufacturer Information:
 
 | 10124010 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | 
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 Techincal Specification:
 
 | MATERIAL | ALUMINUM ALLOY 2024 BODY |  | TEETH QUANTITY | 96 |  | TOOTH FORM | STANDARD |  | PRESSURE ANGLE | 20.0000 DEGREES |  | STYLE DESIGNATOR | PERIPHERAL FACE, HUBLESS |  | PITCH DIAMETER | 1.0000 INCHES NOMINAL |  | NOMINAL OVERALL LENGTH | 0.281 INCHES |  | NOMINAL OUTSIDE DIAMETER | 1.0210 INCHES |  | FACE NOMINAL WIDTH | 0.064 INCHES |  | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.035 INCHES SECOND END |  | BORE NOMINAL DIAMETER | 0.090 INCHES BOTH ENDS |  | HUB NOMINAL DIAMETER | 0.187 INCHES FIRST END |  | ATTACHMENT METHOD | CLAMP |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 18876 |  | DESIGN CONTROL REFERENCE | 10124010 | 
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