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		                             National Stock Number: 3020-00-950-3842
  Federal Supply Class: 3020
  National Item Identification Number: 009503842
  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:
 | 155NC4028 | 82328 | DRESSER RAND CO TERRY CORP STEAM TURBINE MOTOR AND GENERATOR CO A JOINT VENTURE |  | 345035 | 0BR59 | SIEMENS GOVERNMENT TECHNOLOGIES, INC. |  | 345035 | 65456 | WOODS T B INC |  | 345035 | 82328 | DRESSER RAND CO TERRY CORP STEAM TURBINE MOTOR AND GENERATOR CO A JOINT VENTURE |  | NC4028PC155 | 82328 | DRESSER RAND CO TERRY CORP STEAM TURBINE MOTOR AND GENERATOR CO A JOINT VENTURE |  | 345035 | 830Q4 | CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION |   
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  Techincal Specification:
 | BODY STYLE | PLAIN, SOLID |  | BORE NOMINAL DIAMETER | 1.376 INCHES BOTH ENDS |  | BORE STYLE | W/ KEYWAY BOTH ENDS |  | FACE NOMINAL WIDTH | 2.500 INCHES |  | HARDNESS RATING | 58.0 ROCKWELL C MINIMUM  AND 61.0 ROCKWELL C MINIMUM OVERALL |  | HELIX ANGLE | 21.8102 DEGREES |  | KEYWAY NOMINAL WIDTH | 0.250 INCHES BOTH ENDS |  | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |  | PITCH DIAMETER | 2.3071 INCHES NOMINAL |  | MATERIAL | STEEL COMP E3310 OVERALL |  | NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 0.813 INCHES BOTH ENDS |  | NOMINAL OUTSIDE DIAMETER | 2.4790 INCHES |  | PRESSURE ANGLE | 20.0000 DEGREES |  | STYLE DESIGNATOR | HUBLESS |  | TEETH QUANTITY | 12 |  | TEETH TYPE | SINGLE HELIX |  | TOOTH FORM | STANDARD |  | TOOTH DIRECTION | LEFT |   
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