5310-01-124-1261, WASHER,KEY

National Stock Number:
5310-01-124-1261

Federal Supply Class:
5310

National Item Identification Number:
011241261

Description:
WASHER,KEY

Detail:
A washer of nonresilient material usually having two parallel bearing surfaces. The outside and/or inside edges have one or more protuberances. The ends and/or edges may be prebent at any angle or the protuberances may be prebent at any angle to the bearing surfaces. The keys or lugs may be fitted into keyways in adjacent material or they may be bent over after application to hold or lock one or more items in place. Excludes thrust type washer.

Manufacturer Information:

64351-11217-102

78286

SIKORSKY AIRCRAFT CORPORATION

Techincal Specification:

MATERIAL	STEEL COMP 4130 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-18729,COND N MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	OXIDE FILM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-13924,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING	26.0 ROCKWELL C MINIMUM AND
	33.0 ROCKWELL C MAXIMUM
STYLE DESIGNATOR	KEY
INTERNAL KEY QUANTITY	2
HOLE DIAMETER	3.250 INCHES NOMINAL
OUTSIDE DIAMETER	4.250 INCHES NOMINAL
INTERNAL STRAIGHT KEY WIDTH	0.240 INCHES MINIMUM AND
	0.245 INCHES MAXIMUM
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY	1.380 INCHES NOMINAL
MATERIAL THICKNESS	0.090 INCHES NOMINAL
SURFACE FINISH	90.0 MICROINCHES ALL SURFACES
SPECIAL FEATURES	DRILL 4 HOLES 0.265 DIA EQUALLY SPACED ON 3.750 IN. DIA BOLT CIRCLE
MINIMUM TENSILE STRENGTH	125000 POUNDS PER SQUARE INCH
PART NAME ASSIGNED BY CONTROLLING AGENCY	NAVY SPECIAL PROJECT

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