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		                        | National Stock Number:
 3020-00-678-2997
 
 Federal Supply Class:
 3020
 
 National Item Identification Number:
 006782997
 
 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:
 
 | 8754390 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | 
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 Techincal Specification:
 
 | BODY STYLE | WEBBED, OFFSET, SOLID |  | BORE NOMINAL DIAMETER | 1.332 INCHES BOTH ENDS |  | BORE STYLE | INVOLUTE SPLINE BOTH ENDS |  | FACE NOMINAL WIDTH | 1.250 INCHES |  | HARDNESS RATING | 25.0 ROCKWELL C MINIMUM  AND 36.0 ROCKWELL C MAXIMUM BODY |  | HARDNESS RATING | 60.0 ROCKWELL C NOMINAL HUB |  | HELIX ANGLE | 25.6000 DEGREES |  | HUB NOMINAL DIAMETER | 1.660 INCHES FIRST END |  | HUB STYLE DESIGNATOR | PLAIN BOTH ENDS |  | MATERIAL DOCUMENT AND CLASSIFICATION | 66 SAE 8620H FED STD ALL MATERIAL RESPONSES OVERALL |  | PITCH DIAMETER | 2.8164 INCHES NOMINAL |  | MATERIAL | STEEL COMP 8620  OR STEEL COMP 8622 OVERALL |  | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.050 INCHES SECOND END |  | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.191 INCHES FIRST END |  | NOMINAL OVERALL LENGTH | 1.491 INCHES |  | NOMINAL OUTSIDE DIAMETER | 3.097 INCHES |  | PRESSURE ANGLE | 20.0000 DEGREES |  | SPLINE PITCH DIAMETER | 1.2500 INCHES NOMINAL BOTH ENDS |  | SPLINE QUANTITY | 15 BOTH ENDS |  | STYLE DESIGNATOR | PROTRUDING HUBS |  | TEETH QUANTITY | 20 |  | TEETH TYPE | SINGLE HELIX |  | SPECIAL FEATURES | SPLINE MINOR DIA 1.680 IN. |  | TOOTH DIRECTION | RIGHT |  | TOOTH FORM | STANDARD | 
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