3020-00-421-7666, GEAR CLUSTER

National Stock Number:
3020-00-421-7666

Federal Supply Class:
3020

National Item Identification Number:
004217666

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:

370193	3B150	RAYTHEON COMPANY
370193	49956	RAYTHEON COMPANY
370193	54X10	RAYTHEON COMPANY

Techincal Specification:

MATERIAL	ALUMINUM ALLOY FIRST GEAR
	STEEL CORROSION RESISTING SECOND GEAR
	STEEL CORROSION RESISTING THIRD GEAR
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-B-679 FED SPEC SINGLE MATERIAL RESPONSE FIRST GEAR
	AMS 5643,COND A ASSN STD SINGLE MATERIAL RESPONSE SECOND GEAR
	AMS 5643,COND A ASSN STD SINGLE MATERIAL RESPONSE THIRD GEAR
SURFACE TREATMENT	PASSIVATE SECOND GEAR
	PASSIVATE THIRD GEAR
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-STD-171 MIL STD SINGLE TREATMENT RESPONSE SECOND GEAR
	MIL-STD-171 MIL STD SINGLE TREATMENT RESPONSE THIRD GEAR
CONSTRUCTION	ASSEMBLED
DESIGN TYPE	SPUR ALL GEARS
NOMINAL OUTSIDE DIAMETER	1.604 INCHES FIRST GEAR
	1.000 INCHES SECOND GEAR
	0.200 INCHES THIRD GEAR
NOMINAL OVERALL LENGTH	1.900 INCHES
HUB STYLE DESIGNATOR	PLAIN FIRST END
	1 STEP SECOND END
HUB NOMINAL LENGTH	0.125 INCHES FIRST END
	0.361 INCHES SECOND END
HUB NOMINAL DIAMETER	0.440 INCHES FIRST END
	0.310 INCHES SECOND END

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