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		                        | National Stock Number:
 3020-00-238-7670
 
 Federal Supply Class:
 3020
 
 National Item Identification Number:
 002387670
 
 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:
 
 | 2529 | 54641 | LEAR SIEGLER INC SHERWOOD DIV |  | 82312S41-188PC44 | 80064 | NAVAL SHIP SYSTEMS COMMAND |  | H8688PC44 | 54641 | LEAR SIEGLER INC SHERWOOD DIV | 
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 Techincal Specification:
 
 | ATTACHMENT METHOD | MOUNTING HOLE |  | BODY STYLE | PLAIN, SOLID |  | BOLT HOLE CIRCLE NOMINAL DIAMETER | 1.312 INCHES AXIALLY THROUGH BODY FIRST END |  | BORE NOMINAL DIAMETER | 0.876 INCHES FIRST END |  | BORE STYLE | W/ KEYWAY BOTH ENDS |  | FACE NOMINAL WIDTH | 3.625 INCHES |  | HELIX ANGLE | 10.0000 DEGREES |  | KEYWAY NOMINAL WIDTH | 0.187 INCHES BOTH ENDS |  | MATERIAL | COPPER ALLOY OVERALL |  | PITCH DIAMETER | 2.3330 INCHES NOMINAL |  | MOUNTING HOLE NOMINAL THREAD SIZE | 0.312 INCHES AXIALLY THROUGH BODY FIRST END |  | MOUNTING HOLE THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) AXIALLY THROUGH BODY FIRST END |  | MOUNTING HOLE TYPE AND QUANTITY | 2 THREADED AXIALLY THROUGH BODY FIRST END |  | NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 0.530 INCHES FIRST END |  | NOMINAL OUTSIDE DIAMETER | 2.6655 INCHES |  | PRESSURE ANGLE | 20.0000 DEGREES |  | SPECIAL FEATURES | HOLES LOCATED 90 DEG FROM KEYWAY |  | STYLE DESIGNATOR | HUBLESS |  | TEETH QUANTITY | 13 |  | TEETH TYPE | SINGLE HELIX |  | TOOTH FORM | STANDARD |  | TOOTH DIRECTION | LEFT | 
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