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		                             National Stock Number: 3020-00-423-2122
  Federal Supply Class: 3020
  National Item Identification Number: 004232122
  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:
 | A27452 | 02184 | OBRIEN GEAR CO |  | A27452 | 37159 | LUFKIN INDUSTRIES, INC. DBA POWER TRANSMISSION |   
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  Techincal Specification:
 | BODY STYLE | PLAIN, SOLID |  | BORE NOMINAL DIAMETER | 0.786 INCHES BOTH ENDS |  | BORE STYLE | W/ KEYWAY BOTH ENDS |  | FACE NOMINAL WIDTH | 1.250 INCHES |  | HELIX ANGLE | 14.3614 DEGREES |  | HUB NOMINAL DIAMETER | 1.125 INCHES FIRST END |  | HUB STYLE DESIGNATOR | PLAIN FIRST END |  | KEYWAY NOMINAL WIDTH | 0.190 INCHES BOTH ENDS |  | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE  AND AISI/SAE 41454 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |  | PITCH DIAMETER | 8.0000 INCHES NOMINAL |  | MATERIAL | STEEL COMP 4145H OVERALL |  | NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 0.291 INCHES BOTH ENDS |  | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.188 INCHES FIRST END |  | NOMINAL OUTSIDE DIAMETER | 8.249 INCHES |  | PRESSURE ANGLE | 14.5000 DEGREES |  | STYLE DESIGNATOR | PROTRUDING HUB |  | TEETH QUANTITY | 62 |  | TEETH TYPE | SINGLE HELIX |  | TOOTH FORM | STANDARD |  | TOOTH DIRECTION | LEFT |   
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