3020-00-989-5990 GEAR,HELICAL Index 3020-00-989-5992 GEAR,SPUR

National Stock Number:
3020-00-989-5991

Federal Supply Class:
3020

National Item Identification Number:
009895991

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:
A16994-142498DAR ELECTRONICS INC DBA NATIONAL RADIO CO


Techincal Specification:
ATTACHMENT METHODMOUNTING HOLE
BODY STYLEPLAIN, SOLID
BORE NOMINAL DIAMETER0.2500 INCHES BOTH ENDS
BORE STYLEPLAIN BOTH ENDS
FACE NOMINAL WIDTH0.125 INCHES
HELIX ANGLE45.0000 DEGREES
HUB STYLE DESIGNATORPLAIN FIRST END
HUB NOMINAL DIAMETER0.500 INCHES FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303 OVERALL
MOUNTING HOLE THREAD SERIES DESIGNATORUNC TRANSVERSELY THROUGH HUB, FIRST END
MOUNTING HOLE TYPE AND QUANTITY2 THREADED TRANSVERSELY THROUGH HUB, FIRST END
MOUNTING HOLE NOMINAL THREAD SIZE0.138 INCHES TRANSVERSELY THROUGH HUB, FIRST END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.250 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER0.6320 INCHES
PITCH DIAMETER0.5900 INCHES NOMINAL
PRESSURE ANGLE20.0000 DEGREES
PRECISION CLASSIFICATIONQUALITY NUMBER 10
SPECIAL FEATURESMTG HOLES 120 DEG APART
STYLE DESIGNATORPROTRUDING HUB
SURFACE TREATMENTPASSIVATE OVERALL
TEETH TYPESINGLE HELIX
TEETH QUANTITY20
TOOTH DIRECTIONLEFT
TOOTH FORMSTANDARD


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