1055-00-385-7974 SCREW Index 3020-00-385-7976 GEAR,WORM WHEEL

National Stock Number:
3020-00-385-7975

Federal Supply Class:
3020

National Item Identification Number:
003857975

Description:
GEAR,WORM

Detail:
A GEAR WITH TEETH ON ITS OUTER SURFACE IN THE FORM OF HELICAL THREADS.


Manufacturer Information:
840400019204ARMY, UNITED STATES DEPARTMENT OF THE


Techincal Specification:
END NOMINAL DIAMETER1.377 INCHES SECOND END
END NOMINAL LENGTH0.750 INCHES SECOND END
FACE NOMINAL WIDTH2.625 INCHES
FIRST STEP NOMINAL DIAMETER1.625 INCHES SECOND END
FIRST STEP NOMINAL LENGTH0.500 INCHES SECOND END
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
HELIX ANGLE30.0000 DEGREES
HUB STYLE DESIGNATOR1 STEP FIRST END
MATERIALSTEEL OVERALL
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END1.937 INCHES SECOND END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END5.156 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER1.850 INCHES
NOMINAL OVERALL LENGTH9.719 INCHES
PITCH DIAMETER1.6539 INCHES NOMINAL
PRESSURE ANGLE25.0000 DEGREES
SECOND STEP NOMINAL DIAMETER1.389 INCHES SECOND END
SECOND STEP NOMINAL LENGTH0.687 INCHES SECOND END
STYLE DESIGNATORPROTRUDING HUBS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-P-16232,TYPE Z,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE AND MIL-P-16232,TYPE Z,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPHOSPHATE ZINC OVERALL
THREAD FORM DIRECTIONLEFT-HAND
THREAD FORM QUANTITY6


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