3020-00-272-7535 GEAR,SPUR Index 3110-00-272-7548 BEARING,BALL,ANNULAR

National Stock Number:
3020-00-272-7541

Federal Supply Class:
3020

National Item Identification Number:
002727541

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:
77815810001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER
BUWEPSDWG77815808092DEPARTMENT OF THE NAVY NAVAL SURFACE WARFARE CENTER CRANE DETACHMENT
BUWEPSDWG77815808KE6NAVSURFWARCEN DET PICATINNY


Techincal Specification:
MATERIALSTEEL COMP 4140 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE AND
AISI/SAE 4140 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING25.0 ROCKWELL C MINIMUM AND
30.0 ROCKWELL C MAXIMUM HUB
40.8 ROCKWELL C NOMINAL TEETH
TEETH QUANTITY72
TOOTH FORMSTANDARD
PRESSURE ANGLE20.0000 DEGREES
PRECISION CLASSIFICATIONQUALITY NUMBER 12
STYLE DESIGNATORPROTRUDING HUBS
PITCH DIAMETER12.0000 INCHES NOMINAL
NOMINAL OUTSIDE DIAMETER12.2490 INCHES
FACE NOMINAL WIDTH1.2500 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.5630 INCHES FIRST END
0.1870 INCHES SECOND END
BORE STYLESTRAIGHT SPLINE BOTH ENDS
BORE NOMINAL DIAMETER1.4995 INCHES BOTH ENDS
SPLINE QUANTITY6 BOTH ENDS
HUB STYLE DESIGNATORPLAIN BOTH ENDS
HUB NOMINAL DIAMETER2.0000 INCHES FIRST END
1.9370 INCHES SECOND END
BODY STYLEWEBBED, WITH LIGHTENING HOLES
SPECIAL FEATURESCOUNTERBORE,1.500 IN. DIA,0.500 IN. DEEP ON SECOND END


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