5305-00-062-8806 SCREW,EXTERNALLY RELIEVED BODY Index 5330-00-062-8809 GASKET

National Stock Number:
5310-00-062-8807

Federal Supply Class:
5310

National Item Identification Number:
000628807

Description:
WASHER,CONCAVE

Detail:
A WASHER WHICH IS ROUND WITH A CENTRALLY LOCATED HOLE. ONE BEARING SURFACE IS SMOOTH, FLAT, AND UNBROKEN, THE OTHER BEARING SURFACE IS SMOOTH, UNBROKEN, AND IS RECESSED TO FORM A CURVED OR SPHERICAL CONTOUR. SEE ALSO WASHER (1), CONVEX. EXCLUDES WASHER (1), RECESSED AND BEARING, WASHER, THRUST.


Manufacturer Information:
10560158-518876U S ARMY AVIATION AND MISSILE COMMAND


Techincal Specification:
MATERIALSTEEL COMP 4340 OR
STEEL COMP E4340 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000,COND C MIL SPEC ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENTCADMIUM AND
CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND
37.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORCONCAVE
HOLE DIAMETER0.624 INCHES MINIMUM AND
0.633 INCHES MAXIMUM
RADIUS0.450 INCHES MINIMUM AND
0.460 INCHES MAXIMUM
OUTSIDE DIAMETER0.925 INCHES NOMINAL
RECESS DEPTH0.130 INCHES NOMINAL
MATERIAL THICKNESS0.340 INCHES NOMINAL
SURFACE FINISH63.0 MICROINCHES TOP
SPECIAL FEATURESBOTTOM SERRATED


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