5310-01-185-7220 WASHER,FINISHING Index 5310-01-185-7222 WASHER,SPRING TENSION

National Stock Number:
5310-01-185-7221

Federal Supply Class:
5310

National Item Identification Number:
011857221

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:
66-2955-1182918THE BOEING COMPANY


Techincal Specification:
HOLE DIAMETER0.189 INCHES MINIMUM AND 0.194 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.001 INCHES MINIMUM AND 0.011 INCHES MAXIMUM
MATERIALALUMINUM ALLOY 2024 OVERALL
PROPRIETARY CHARACTERISTICSPACS
OUTSIDE DIAMETER0.375 INCHES NOMINAL
OVERALL HEIGHT0.044 INCHES NOMINAL
RECESS ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
RECESS DIAMETER0.274 INCHES MINIMUM AND 0.284 INCHES MAXIMUM
STYLE DESIGNATORFINISHING
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541,CL 1A MIL SPEC 1ST TREATMENT RESPONSE OVERALL OR MIL-A-8625,TY 1,CL 1 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCHROMATE OVERALL OR ANODIZE OVERALL


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