3020-01-251-5883 GEAR,HELICAL Index 3020-01-251-5885 GEAR,HELICAL

National Stock Number:
3020-01-251-5884

Federal Supply Class:
3020

National Item Identification Number:
012515884

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:
521019453711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
BODY STYLEPLAIN, SOLID
BORE STYLEW/ KEYWAY BOTH ENDS
BORE NOMINAL DIAMETER3.000 INCHES BOTH ENDS
FACE NOMINAL WIDTH3.200 INCHES
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HELIX ANGLE57.5397 DEGREES
HUB NOMINAL DIAMETER5.000 INCHES FIRST END
HUB STYLE DESIGNATORPLAIN FIRST END
KEYWAY NOMINAL WIDTH0.751 INCHES BOTH ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OR FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 4340 OVERALL
NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM1.854 INCHES BOTH ENDS
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.533 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER6.445 INCHES
PITCH DIAMETER6.1988 INCHES NOMINAL
PRESSURE ANGLE25.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUB
TEETH QUANTITY47
TEETH TYPESINGLE HELIX
TOOTH FORMSTANDARD
TOOTH DIRECTIONLEFT


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