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		                        | National Stock Number:
 3020-00-678-2981
 
 Federal Supply Class:
 3020
 
 National Item Identification Number:
 006782981
 
 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:
 
 | 7536193 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |  | 8754369 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | 
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 Techincal Specification:
 
 | BODY STYLE | WEBBED, OFFSET, SOLID |  | BORE NOMINAL DIAMETER | 1.863 INCHES BOTH ENDS |  | BORE STYLE | PLAIN BOTH ENDS |  | END NOMINAL DIAMETER | 2.440 INCHES FIRST END |  | END NOMINAL LENGTH | 0.245 INCHES FIRST END |  | FACE NOMINAL WIDTH | 1.235 INCHES |  | FIRST STEP NOMINAL DIAMETER | 2.560 INCHES FIRST END |  | FIRST STEP NOMINAL LENGTH | 0.747 INCHES FIRST END |  | HARDNESS RATING | 25.0 ROCKWELL C MINIMUM  AND 39.0 ROCKWELL C MAXIMUM BODY |  | HARDNESS RATING | 60.0 ROCKWELL C NOMINAL HUB |  | HELIX ANGLE | 33.3375 DEGREES |  | HUB NOMINAL DIAMETER | 2.440 INCHES SECOND END |  | HUB STYLE DESIGNATOR | 1 STEP FIRST END |  | HUB STYLE DESIGNATOR | PLAIN SECOND END |  | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-624 FS 8620 TO 8622 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |  | PITCH DIAMETER | 4.6470 INCHES NOMINAL |  | MATERIAL | STEEL OVERALL |  | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.245 INCHES SECOND END |  | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.992 INCHES FIRST END |  | NOMINAL OVERALL LENGTH | 2.472 INCHES |  | NOMINAL OUTSIDE DIAMETER | 4.890 INCHES |  | PRESSURE ANGLE | 17.0000 DEGREES |  | STYLE DESIGNATOR | PROTRUDING HUBS |  | TEETH QUANTITY | 33 |  | TEETH TYPE | SINGLE HELIX |  | TOOTH FORM | STANDARD |  | TOOTH DIRECTION | LEFT | 
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