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National Stock Number: 5310-00-061-8078
Federal Supply Class: 5310
National Item Identification Number: 000618078
Description: WASHER,RECESSED
Detail: A WASHER OF ANY PERIPHERAL SHAPE HAVING A CENTRALLY LOCATED HOLE. BOTH BEARING SURFACES ARE PARALLEL AND FLAT, BUT ONE OR BOTH OF THE BEARING SURFACES MUST BE BROKEN BY A COUNTERBORE, COUNTERSINK, OR SIMILARLY SHAPED RECESS. THE THICKNESS MUST NOT EXCEED 25 PER CENT OF THE OUTSIDE DIAMETER OR THE LARGEST OUTSIDE DIMENSION. THE MAXIMUM LIMIT OF THE TOLERANCE OR RANGE APPLIED TO THE THICKNESS AND/OR LARGEST OUTSIDE DIMENSION MUST BE USED TO DETERMINE COMPLIANCE. EXCLUDES WASHER, CONCAVE, RETAINER, PACKING, AND THRUST TYPE WASHERS. SEE ALSO SPACER, SLEEVE; AND SPACER, STEPPED.
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Manufacturer Information:
70-1907 | 30554 | DEPARTMENT OF DEFENSE PROJECT MANAGER-MOBILE ELECTRIC POWER |
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Techincal Specification:
HOLE DIAMETER | 0.655 INCHES MINIMUM AND 0.664 INCHES MAXIMUM | OUTSIDE DIAMETER | 1.870 INCHES NOMINAL | MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL | MATERIAL THICKNESS | 0.310 INCHES NOMINAL | MATERIAL | STEEL COMP 1045 OVERALL | RECESS ANGLE | 81.0 DEGREES NOMINAL | RECESS DIAMETER | 1.070 INCHES MINIMUM AND 1.120 INCHES MAXIMUM | STYLE DESIGNATOR | RECESSED | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-Z-325,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | SURFACE TREATMENT | ZINC OVERALL |
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