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		                             National Stock Number: 3020-00-385-7953
  Federal Supply Class: 3020
  National Item Identification Number: 003857953
  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:
 | 8402616 | 19204 | ARMY, UNITED STATES DEPARTMENT OF THE |   
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  Techincal Specification:
 | BODY STYLE | WEBBED, SOLID |  | BORE STYLE | STRAIGHT SPLINE BOTH ENDS |  | COUNTERBORE NOMINAL DIAMETER | 1.125 INCHES SECOND END |  | COUNTERBORE NOMINAL DEPTH | 1.429 INCHES SECOND END |  | FACE NOMINAL WIDTH | 1.125 INCHES |  | HARDNESS RATING | 33.0 ROCKWELL C MINIMUM  AND 35.0 ROCKWELL C MAXIMUM OVERALL |  | HELIX ANGLE | 8.9583 DEGREES |  | HUB NOMINAL DIAMETER | 1.625 INCHES FIRST END |  | HUB NOMINAL DIAMETER | 1.625 INCHES SECOND END |  | HUB STYLE DESIGNATOR | PLAIN BOTH ENDS |  | MATERIAL DOCUMENT AND CLASSIFICATION | 66 AISI/SAE 4145 FED STD SINGLE MATERIAL RESPONSE OVERALL |  | PITCH DIAMETER | 3.4167 INCHES NOMINAL |  | MATERIAL | STEEL COMP 4142H OVERALL |  | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.032 INCHES SECOND END |  | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.968 INCHES FIRST END |  | NOMINAL OVERALL LENGTH | 2.125 INCHES |  | NOMINAL OUTSIDE DIAMETER | 3.6667 INCHES |  | PRESSURE ANGLE | 14.5000 DEGREES |  | SPLINE QUANTITY | 10 BOTH ENDS |  | STYLE DESIGNATOR | PROTRUDING HUBS |  | SURFACE TREATMENT | PHOSPHATE OVERALL |  | TEETH QUANTITY | 27 |  | TEETH TYPE | SINGLE HELIX |  | SPECIAL FEATURES | SPLINE MINOR DIA. 1.025 IN. NOM |  | TOOTH FORM | STANDARD |  | TOOTH DIRECTION | LEFT |   
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