3020-01-251-5881 GEAR,HELICAL Index 3020-01-251-5883 GEAR,HELICAL

National Stock Number:
3020-01-251-5882

Federal Supply Class:
3020

National Item Identification Number:
012515882

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:
521031953711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
BODY STYLEPLAIN, SOLID
BORE STYLEW/ KEYWAY BOTH ENDS
BORE NOMINAL DIAMETER4.251 INCHES BOTH ENDS
FACE NOMINAL WIDTH6.403 INCHES
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HELIX ANGLE18.9966 DEGREES
KEYWAY NOMINAL WIDTH1.001 INCHES BOTH ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 4340 OVERALL
NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM2.579 INCHES BOTH ENDS
NOMINAL OUTSIDE DIAMETER8.402 INCHES
PITCH DIAMETER7.7407 INCHES NOMINAL
PRESSURE ANGLE25.0000 DEGREES
STYLE DESIGNATORHUBLESS
TEETH QUANTITY22
TEETH TYPESINGLE HELIX
TOOTH FORMSTANDARD
TOOTH DIRECTIONLEFT


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