4820-01-182-7642 DISK,VALVE Index 3040-01-182-7644 GEARSHAFT,SPUR

National Stock Number:
3020-01-182-7643

Federal Supply Class:
3020

National Item Identification Number:
011827643

Description:
GEAR CLUSTER

Detail:
A cylindrical item having a full 360 degree (6.282 radians) complement of teeth on two or more surfaces. It may be a one-piece casting or composed of two or more separate items firmly held together by welding, rivets, pins, or the like, to form a single unit. It is designed to mount on a shaft. For items consisting of a shaft with an integral complement(s) or gear teeth, see GEARSHAFT (as modified). Excludes GEAR SUBASSEMBLY, SPEED DECREASER.


Manufacturer Information:
387-346602731MCDONNELL DOUGLAS HELICOPTER CO INC
387-34668V613THE BOEING COMPANY


Techincal Specification:
DESIGN TYPESPUR ALL GEARS
BORE STYLEPLAIN BOTH ENDS
BORE NOMINAL DEPTH78.0 MILLIMETERS BOTH ENDS
BORE NOMINAL DIAMETER15.0 MILLIMETERS BOTH ENDS
CONSTRUCTIONSOLID
HARDNESS RATING50.0 ROCKWELL C MINIMUM OVERALL AND 53.0 ROCKWELL C MAXIMUM OVERALL
HUB NOMINAL LENGTH12.0 MILLIMETERS BOTH ENDS
HUB STYLE DESIGNATORPLAIN BOTH ENDS
III MATERIALSTEEL COMP 4340 OVERALL
PROPRIETARY CHARACTERISTICSPACS
NOMINAL OUTSIDE DIAMETER64.0 MILLIMETERS SECOND GEAR
NOMINAL OVERALL LENGTH78.0 MILLIMETERS
SPECIAL FEATURESDIA OF 2ND GEAR 32.0MM
SURFACE TREATMENTPHOSPHATE OVERALL


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