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		                             National Stock Number: 3020-00-541-3421
  Federal Supply Class: 3020
  National Item Identification Number: 005413421
  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:
 | 26-309-1 | 35301 | DRESSER INDUSTRIES INC LEROI DIV |  | 26-309-1 | 71995 | DRESSER INDUSTRIES INC WAUKESHA ENGINE DIV |  | 610587 | 0EXU3 | AQUA-CHEM, INC. |  | 610587 | 12793 | AQUA-CHEM INC CLEAVER-BROOKS DIV |   
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  Techincal Specification:
 | BODY STYLE | PLAIN, SOLID |  | BORE NOMINAL DIAMETER | 1.5003 INCHES BOTH ENDS |  | BORE STYLE | W/ KEYWAY BOTH ENDS |  | FACE NOMINAL WIDTH | 0.875 INCHES |  | HARDNESS RATING | 19.0 ROCKWELL C MINIMUM  AND 26.0 ROCKWELL C MAXIMUM OVERALL |  | HELIX ANGLE | 31.0000 DEGREES |  | KEYWAY NOMINAL WIDTH | 0.1574 INCHES BOTH ENDS |  | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |  | MATERIAL | STEEL COMP 1040 OVERALL |  | PITCH DIAMETER | 3.4999 INCHES NOMINAL |  | NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 0.8321 INCHES BOTH ENDS |  | NOMINAL OUTSIDE DIAMETER | 3.7200 INCHES |  | PRESSURE ANGLE | 14.5000 DEGREES |  | SPECIAL FEATURES | 0.125 IN. 45 DEG CHAMFER ON 1ST END OF BORE,TIMING MARK 141 DEG 45 MIN CW FROM CENTER OF KEYWAY |  | STYLE DESIGNATOR | HUBLESS |  | TEETH QUANTITY | 27 |  | TEETH TYPE | SINGLE HELIX |  | TOOTH FORM | STANDARD |  | TOOTH DIRECTION | LEFT |   
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