3020-00-203-1748 GEAR,HELICAL Index 3020-00-203-1752 GEAR,WORM

National Stock Number:
3020-00-203-1751

Federal Supply Class:
3020

National Item Identification Number:
002031751

Description:
GEAR,WORM WHEEL

Detail:
A GEAR, CYLINDRICAL IN FORM, WITH SPIRAL TEETH DESIGNED TO MESH WITH THE THREAD FORMS OF A GEAR (1), WORM. SEE ALSO GEAR, ANTIBACKLASH, WORM WHEEL.


Manufacturer Information:
31-50173-929386THE HORSBURGH & SCOTT CO
31-50173-980020NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION CODE 4.8.8.0.0.B BLDG 148-2


Techincal Specification:
MATERIALCOPPER ALLOY OVERALL
TEETH QUANTITY28
TOOTH DIRECTIONRIGHT
FACE TYPECONCAVE
THROAT NOMINAL RADIUS0.525 INCHES
MATING THREAD LEAD QUANTITY4
PRESSURE ANGLE14.5000 DEGREES
HELIX ANGLE17.7498 DEGREES
STYLE DESIGNATORPROTRUDING HUB
PITCH DIAMETER2.8000 INCHES NOMINAL
NOMINAL OUTSIDE DIAMETER3.100 INCHES
FACE NOMINAL WIDTH0.625 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.375 INCHES FIRST END
BORE STYLEW/ KEYWAY BOTH ENDS
BORE NOMINAL DIAMETER1.187 INCHES BOTH ENDS
KEYWAY NOMINAL WIDTH0.313 INCHES BOTH ENDS
NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM0.684 INCHES BOTH ENDS
HUB STYLE DESIGNATORPLAIN FIRST END
HUB NOMINAL DIAMETER1.750 INCHES FIRST END
BODY STYLEPLAIN, SOLID


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