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		                             National Stock Number: 3020-00-203-1751
  Federal Supply Class: 3020
  National Item Identification Number: 002031751
  Description: GEAR,WORM WHEEL
  Detail: 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.
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  Manufacturer Information:
 | 31-50173-9 | 29386 | THE HORSBURGH & SCOTT CO |  | 31-50173-9 | 80020 | NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION CODE 4.8.8.0.0.B BLDG 148-2 |   
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  Techincal Specification:
 | BODY STYLE | PLAIN, SOLID |  | BORE NOMINAL DIAMETER | 1.187 INCHES BOTH ENDS |  | BORE STYLE | W/ KEYWAY BOTH ENDS |  | FACE TYPE | CONCAVE |  | FACE NOMINAL WIDTH | 0.625 INCHES |  | HELIX ANGLE | 17.7498 DEGREES |  | HUB NOMINAL DIAMETER | 1.750 INCHES FIRST END |  | HUB STYLE DESIGNATOR | PLAIN FIRST END |  | KEYWAY NOMINAL WIDTH | 0.313 INCHES BOTH ENDS |  | MATERIAL | COPPER ALLOY OVERALL |  | PITCH DIAMETER | 2.8000 INCHES NOMINAL |  | MATING THREAD LEAD QUANTITY | 4 |  | NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 0.684 INCHES BOTH ENDS |  | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.375 INCHES FIRST END |  | NOMINAL OUTSIDE DIAMETER | 3.100 INCHES |  | PRESSURE ANGLE | 14.5000 DEGREES |  | STYLE DESIGNATOR | PROTRUDING HUB |  | TEETH QUANTITY | 28 |  | THROAT NOMINAL RADIUS | 0.525 INCHES |  | TOOTH DIRECTION | RIGHT |   
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