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		                             National Stock Number: 3020-00-245-8315
  Federal Supply Class: 3020
  National Item Identification Number: 002458315
  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:
 | 3237517 | 55380 | HATCH & KIRK, INC. |  | 3237517 | 72915 | GENERAL MOTORS CORP ELECTRO-MOTIVE DIV |   
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  Techincal Specification:
 | BODY STYLE | WEBBED, OFFSET, SOLID |  | BORE NOMINAL DIAMETER | 0.8753 INCHES FIRST END |  | BORE STYLE | W/ KEYWAY BOTH ENDS |  | END NOMINAL DIAMETER | 1.3768 INCHES FIRST END |  | END NOMINAL LENGTH | 0.625 INCHES FIRST END |  | FACE NOMINAL WIDTH | 1.000 INCHES |  | FIRST STEP NOMINAL DIAMETER | 1.7500 INCHES SECOND END |  | FIRST STEP NOMINAL LENGTH | 1.375 INCHES FIRST END |  | HARDNESS RATING | 10.0 ROCKWELL C MINIMUM  AND 16.0 ROCKWELL C MAXIMUM OVERALL |  | HELIX ANGLE | 27.3217 DEGREES |  | HUB NOMINAL DIAMETER | 1.750 INCHES FIRST END |  | HUB STYLE DESIGNATOR | PLAIN FIRST END |  | KEYWAY NOMINAL WIDTH | 0.1853 INCHES FIRST END |  | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-890,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |  | PITCH DIAMETER | 6.8000 INCHES NOMINAL |  | MATERIAL | STEEL OVERALL |  | NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 0.5235 INCHES FIRST END |  | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 1.375 INCHES SECOND END |  | NOMINAL DISTANCE BETWEEN BODY FACE AND RECESSED HUB END | 1.1562 INCHES FIRST END |  | NOMINAL OUTSIDE DIAMETER | 7.0849 INCHES |  | PRESSURE ANGLE | 20.0000 DEGREES |  | SPECIAL FEATURES | 3/64 IN. BY 45 DEG CHAMFER ON 1ST END |  | STYLE DESIGNATOR | CONE SHAPE BODY, PROTRUDING HUB, RECESSED HUB |  | TEETH QUANTITY | 34 |  | TEETH TYPE | SINGLE HELIX |  | TOOTH DIRECTION | RIGHT |  | TOOTH FORM | STANDARD |   
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