1560-00-568-5249 PANEL,STRUCTURAL,AIRCRAFT Index 5310-00-568-5255 WASHER,KEY

National Stock Number:
5310-00-568-5252

Federal Supply Class:
5310

National Item Identification Number:
005685252

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:
S1610-2303078286SIKORSKY AIRCRAFT CORPORATION


Techincal Specification:
EXTERNAL KEY QUANTITY19
EXTERNAL STRAIGHT KEY WIDTH0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM
HOLE DIAMETER4.140 INCHES MINIMUM AND 4.150 INCHES MAXIMUM
OUTSIDE DIAMETER4.625 INCHES MINIMUM AND 4.645 INCHES MAXIMUM
OVERALL DISTANCE INCLUDING KEYS5.500 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE AND QQ-N-281,CLASS A FED SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.078 INCHES NOMINAL
MATERIALSTEEL AND NICKEL ALLOY OVERALL
WIDTH BETWEEN FLATS3.877 INCHES MINIMUM AND 3.882 INCHES MAXIMUM
STYLE DESIGNATORKEY
SURFACE TREATMENTPASSIVATE OVERALL


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