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National Stock Number: 3020-00-351-2344
Federal Supply Class: 3020
National Item Identification Number: 003512344
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:
680875-0001 | 06481 | NORTHROP GRUMMAN SYSTEMS CORPORATION | 680875-1 | 06481 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
ATTACHMENT METHOD | CLAMP | BORE NOMINAL DIAMETER | 0.120 INCHES BOTH ENDS | BORE STYLE | PLAIN BOTH ENDS | CLAMPING SURFACE NOMINAL LENGTH | 0.135 INCHES SECOND END | FACE NOMINAL WIDTH | 0.144 INCHES | HUB NOMINAL DIAMETER | 0.143 INCHES SECOND END | HUB NOMINAL DIAMETER | 0.250 INCHES FIRST END | HUB STYLE DESIGNATOR | PLAIN FIRST END | HUB STYLE DESIGNATOR | SPLIT SECOND END | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8,T651 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | MATERIAL | ALUMINUM ALLOY 6061 OVERALL | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.069 INCHES FIRST END | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.140 INCHES SECOND END | NOMINAL OUTSIDE DIAMETER | 1.266 INCHES | PITCH DIAMETER | 1.2490 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM | PRECISION CLASSIFICATION | QUALITY NUMBER 10 | PRESSURE ANGLE | 20.0000 DEGREES | STYLE DESIGNATOR | PROTRUDING HUBS | TEETH QUANTITY | 150 | TOOTH FORM | STANDARD |
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