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		                        | National Stock Number:
 3020-00-508-4650
 
 Federal Supply Class:
 3020
 
 National Item Identification Number:
 005084650
 
 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:
 
 | 225998 | 21444 | REXNORD INDUSTRIES LLC | 
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 Techincal Specification:
 
 | BODY STYLE | PLAIN, SOLID |  | BORE NOMINAL DIAMETER | 0.500 INCHES BOTH ENDS |  | BORE STYLE | W/ KEYWAY BOTH ENDS |  | END NOMINAL DIAMETER | 0.750 INCHES FIRST END |  | END NOMINAL LENGTH | 0.125 INCHES FIRST END |  | FACE NOMINAL WIDTH | 0.500 INCHES |  | FIRST STEP NOMINAL DIAMETER | 1.500 INCHES FIRST END |  | FIRST STEP NOMINAL LENGTH | 0.385 INCHES FIRST END |  | HARDNESS RATING | 225.0 BRINELL STANDARD MINIMUM  AND 265.0 BRINELL STANDARD MAXIMUM OVERALL |  | HELIX ANGLE | 8.1877 DEGREES |  | HUB STYLE DESIGNATOR | 2 STEPS FIRST END |  | KEYWAY NOMINAL WIDTH | 0.125 INCHES BOTH ENDS |  | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-890,ALLOY NO.3 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |  | MATERIAL | STEEL OVERALL |  | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 1.219 INCHES FIRST END |  | NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 0.312 INCHES BOTH ENDS |  | NOMINAL OUTSIDE DIAMETER | 1.420 INCHES |  | PITCH DIAMETER | 1.3100 INCHES NOMINAL |  | PRESSURE ANGLE | 20.0000 DEGREES |  | SECOND STEP NOMINAL DIAMETER | 1.000 INCHES FIRST END |  | SECOND STEP NOMINAL LENGTH | 0.709 INCHES FIRST END |  | STYLE DESIGNATOR | PROTRUDING HUB |  | TEETH QUANTITY | 24 |  | TEETH TYPE | SINGLE HELIX |  | TOOTH DIRECTION | LEFT | 
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