4510-01-485-0769 COVER,BOTTOM OPTION Index 5305-01-485-0771 SCREW,MACHINE

National Stock Number:
5310-01-485-0770

Federal Supply Class:
5310

National Item Identification Number:
014850770

Description:
WASHER,FINISHING

Detail:
A WASHER OR CONE OR DISK SHAPE WITH A CENTRALLY LOCATED HOLE, DESIGNED TO ACCOMMODATE A FLAT OR OVAL HEAD SCREW AND PROVIDE ADDITIONAL BEARING AREA ON THE MATERIAL BEING FASTENED. IT MAY OR MAY NOT HAVE A FLUSH FLANGE FEATURE.


Manufacturer Information:
HS5321C302731MCDONNELL DOUGLAS HELICOPTER CO INC
HS5321C310630ANILLO INDUSTRIES LLC
HS5321C38V613THE BOEING COMPANY


Techincal Specification:
HOLE DIAMETER0.190 INCHES MINIMUM AND 0.228 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6721 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.003 INCHES MINIMUM AND 0.007 INCHES MAXIMUM
MATERIALSTEEL CORROSION RESISTING OVERALL
RECESS ANGLE99.0 DEGREES MINIMUM AND 103.0 DEGREES MAXIMUM
RECESS DIAMETER0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM
STYLE DESIGNATORFINISHING


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