3020-01-246-7826 GEAR,SPUR Index 3020-01-246-7828 GEAR,SPUR

National Stock Number:
3020-01-246-7827

Federal Supply Class:
3020

National Item Identification Number:
012467827

Description:
GEAR,SPUR

Detail:
A gear, cylindrical in form, with straight teeth on the outer surface parallel to the axis of the gear. See also GEAR, ANTIBACKLASH, SPUR. For bulk material, see ROD, PINION.


Manufacturer Information:
1395AS22030003NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER


Techincal Specification:
MATERIALSTEEL COMP 4340 OR
STEEL COMP 4130 OR
STEEL COMP 4140 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM-A322,HOT ROLLED OR ASTM-A331,COLD FINISHED ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTPHOSPHATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171 MIL STD SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING33.0 ROCKWELL C MINIMUM AND
38.0 ROCKWELL C MAXIMUM OVERALL
TEETH QUANTITY39
TOOTH FORMSTANDARD
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUBS
PITCH DIAMETER3.9000 INCHES NOMINAL
NOMINAL OUTSIDE DIAMETER4.196 INCHES
FACE NOMINAL WIDTH0.250 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.160 INCHES FIRST END
0.100 INCHES SECOND END
BORE STYLEINVOLUTE SPLINE BOTH ENDS
BORE NOMINAL DIAMETER0.662 INCHES BOTH ENDS
SPLINE QUANTITY19 BOTH ENDS
SPLINE PITCH DIAMETER0.5938 INCHES NOMINAL BOTH ENDS
HUB STYLE DESIGNATORPLAIN BOTH ENDS
HUB NOMINAL DIAMETER0.870 INCHES BOTH ENDS
BODY STYLEWEBBED, OFFSET, WITH LIGHTENING HOLES


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