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		                             National Stock Number: 3020-00-675-1761
  Federal Supply Class: 3020
  National Item Identification Number: 006751761
  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:
 | S6135-20185 | 21540 | PRECISION GEAR INDUSTRIES LLC |  | S6135-20185 | 54878 | ROTAIR AEROSPACE CORP |  | S6135-20185 | 78286 | SIKORSKY AIRCRAFT CORPORATION |  | S6135-20185-000 | 78286 | SIKORSKY AIRCRAFT CORPORATION |  | S6135-20185 | 93828 | IGW SYSTEMS INC |   
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  Techincal Specification:
 | BODY STYLE | WEBBED, OFFSET, SOLID |  | BORE NOMINAL DIAMETER | 2.345 INCHES BOTH ENDS |  | BORE STYLE | INVOLUTE SPLINE BOTH ENDS |  | FACE NOMINAL WIDTH | 0.375 INCHES |  | HARDNESS RATING | 30.0 ROCKWELL C MINIMUM  AND 40.0 ROCKWELL C MAXIMUM HUB |  | HARDNESS RATING | 58.0 ROCKWELL C MINIMUM  AND 64.0 ROCKWELL C MAXIMUM TEETH |  | HELIX ANGLE | 3.3349 DEGREES |  | HUB NOMINAL DIAMETER | 2.625 INCHES BOTH ENDS |  | HUB STYLE DESIGNATOR | PLAIN BOTH ENDS |  | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6260 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |  | PITCH DIAMETER | 4.0156 INCHES NOMINAL |  | MATERIAL | STEEL COMP E9310 OVERALL |  | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.050 INCHES SECOND END |  | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.416 INCHES FIRST END |  | NOMINAL OUTSIDE DIAMETER | 4.213 INCHES |  | PRESSURE ANGLE | 20.0000 DEGREES |  | SPECIAL FEATURES | 1ST END COUNTERBORE,2.364 IN. DIA BY 0.438 IN. DP |  | SPLINE PITCH DIAMETER | 2.2500 INCHES NOMINAL BOTH ENDS |  | SPLINE QUANTITY | 45 BOTH ENDS |  | STYLE DESIGNATOR | PROTRUDING HUBS |  | TEETH QUANTITY | 40 |  | TEETH TYPE | SINGLE HELIX |  | TOOTH FORM | STANDARD |  | TOOTH DIRECTION | LEFT |   
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