3020-00-391-0929 GEAR,HELICAL Index 3020-00-391-0931 GEAR,HELICAL

National Stock Number:
3020-00-391-0930

Federal Supply Class:
3020

National Item Identification Number:
003910930

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:


Manufacturer Information:
330000472915GENERAL MOTORS CORP ELECTRO-MOTIVE DIV
380000455380HATCH & KIRK, INC.


Techincal Specification:
BODY STYLEWEBBED, WITH LIGHTENING HOLES
BORE NOMINAL DIAMETER2.0000 INCHES BOTH ENDS
BORE STYLEPLAIN BOTH ENDS
END NOMINAL DIAMETER2.997 INCHES FIRST END
END NOMINAL LENGTH1.375 INCHES FIRST END
FACE NOMINAL WIDTH2.000 INCHES
FIRST STEP NOMINAL DIAMETER4.125 INCHES FIRST END
FIRST STEP NOMINAL LENGTH0.688 INCHES FIRST END
HARDNESS RATING10.0 ROCKWELL C MINIMUM AND 20.0 ROCKWELL C MAXIMUM OVERALL
HELIX ANGLE27.3217 DEGREES
HUB NOMINAL DIAMETER2.997 INCHES SECOND END
HUB STYLE DESIGNATOR1 STEP FIRST END
HUB STYLE DESIGNATORPLAIN SECOND END
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-890,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.688 INCHES BOTH ENDS
NOMINAL OUTSIDE DIAMETER11.084 INCHES
PITCH DIAMETER10.8000 INCHES NOMINAL
PRESSURE ANGLE20.0000 DEGREES
SPECIAL FEATURESTWO COUNTERWEIGHTS,OIL HOLES,TIMING MARKS
STYLE DESIGNATORPROTRUDING HUBS
TEETH QUANTITY54
TEETH TYPESINGLE HELIX
TOOTH FORMSTANDARD
TOOTH DIRECTIONLEFT


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