3020-01-286-7659 GEAR,HELICAL Index 3020-01-286-7661 GEAR,SPUR

National Stock Number:
3020-01-286-7660

Federal Supply Class:
3020

National Item Identification Number:
012867660

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:
SM-D-77278380063US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR


Techincal Specification:
MATERIALSTEEL COMP 4340 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTCOPPER OVERALL
HARDNESS RATING37.0 ROCKWELL C MINIMUM AND
39.0 ROCKWELL C MAXIMUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-14550,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
TEETH QUANTITY17
TEETH TYPESINGLE HELIX
TOOTH FORMSTUB
TOOTH DIRECTIONLEFT
PRESSURE ANGLE20.0000 DEGREES
HELIX ANGLE21.8305 DEGREES
PRECISION CLASSIFICATIONQUALITY NUMBER 12
STYLE DESIGNATORPROTRUDING HUB
PITCH DIAMETER0.2861 INCHES NOMINAL
NOMINAL OUTSIDE DIAMETER0.297 INCHES
FACE NOMINAL WIDTH0.280 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.382 INCHES FIRST END
HUB STYLE DESIGNATORPINNED FIRST END
HUB NOMINAL DIAMETER0.210 INCHES FIRST END
BODY STYLEPLAIN, SOLID


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