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		                             National Stock Number: 3020-00-251-7555
  Federal Supply Class: 3020
  National Item Identification Number: 002517555
  Description: GEAR,HELICAL
  Detail: 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:
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  Manufacturer Information:
 | 05166650 | 72582 | ROLLS-ROYCE SOLUTIONS AMERICA INC |  | 5166650 | 24617 | GENERAL MOTORS CORP |  | K-5166650 | 18954 | KORODY-COLYER CORP A CR INDUSTRIES CO |  | 5166650 | 72582 | ROLLS-ROYCE SOLUTIONS AMERICA INC |   
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  Techincal Specification:
 | PROPRIETARY CHARACTERISTICS | PACS |  | NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 0.3862 INCHES FIRST END |  | NOMINAL OUTSIDE DIAMETER | 1.6025 INCHES |  | STYLE DESIGNATOR | HUBLESS |  | TEETH QUANTITY | 8 |  | TEETH TYPE | SINGLE HELIX |  | TOOTH DIRECTION | RIGHT |  | TOOTH FORM | STANDARD |  | BODY STYLE | PLAIN, SOLID |  | BORE STYLE | W/ KEYWAY BOTH ENDS |  | BORE NOMINAL DIAMETER | 0.6247 INCHES FIRST END |  | FACE NOMINAL WIDTH | 1.269 INCHES |  | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM OVERALL AND 32.0 ROCKWELL C MAXIMUM OVERALL |  | HELIX ANGLE | 9.7498 DEGREES |  | KEYWAY NOMINAL WIDTH | 0.127 INCHES BOTH ENDS |  | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL AND AISI/SAE 1137 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |  | III MATERIAL | STEEL COMP 1137 OVERALL |  | PITCH DIAMETER | 1.3500 INCHES NOMINAL |  | PRESSURE ANGLE | 28.0000 DEGREES |   
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