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		                             National Stock Number: 3020-00-468-3171
  Federal Supply Class: 3020
  National Item Identification Number: 004683171
  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:
 | 1012 | 12763 | DYNALEC CORPORATION |  | 1012 | 20049 | THE ELECTRIC TACHOMETER CORP. |  | 2162L3PC50 | 12763 | DYNALEC CORPORATION |  | 2162L3PC50 | 20049 | THE ELECTRIC TACHOMETER CORP. |  | DD692S6505-21PC50 | 53711 | NAVAL SEA SYSTEMS COMMAND |  | DD692S6505-21PC50 | 80064 | NAVAL SHIP SYSTEMS COMMAND |   
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  Techincal Specification:
 | BODY RECESS NOMINAL DEPTH | 0.062 INCHES SECOND END |  | BODY STYLE | WEBBED, OFFSET, WITH LIGHTENING HOLES |  | BORE NOMINAL DIAMETER | 0.500 INCHES BOTH ENDS |  | BORE STYLE | W/ KEYWAY BOTH ENDS |  | FACE NOMINAL WIDTH | 0.500 INCHES |  | HELIX ANGLE | 6.3333 DEGREES |  | HUB NOMINAL DIAMETER | 0.812 INCHES FIRST END |  | HUB STYLE DESIGNATOR | PLAIN FIRST END |  | KEYWAY NOMINAL WIDTH | 0.094 INCHES BOTH ENDS |  | MATERIAL | COPPER ALLOY OVERALL |  | PITCH DIAMETER | 1.8750 INCHES NOMINAL |  | NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 0.328 INCHES BOTH ENDS |  | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.750 INCHES FIRST END |  | NOMINAL OUTSIDE DIAMETER | 2.0000 INCHES |  | PRESSURE ANGLE | 14.5000 DEGREES |  | STYLE DESIGNATOR | PROTRUDING HUB, RECESSED BODY |  | TEETH QUANTITY | 30 |  | TEETH TYPE | SINGLE HELIX |  | TOOTH DIRECTION | RIGHT |  | TOOTH FORM | STANDARD |   
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