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National Stock Number:
5310-01-197-4491
Federal Supply Class:
5310
National Item Identification Number:
011974491
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:
| 13211E8627 | 97403 | CECOM LR CENTER |
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Techincal Specification:
| HOLE DIAMETER | 2.690 INCHES NOMINAL | | OUTSIDE DIAMETER | 4.500 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A576 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL THICKNESS | 0.250 INCHES NOMINAL | | MATERIAL | STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1025 OVERALL | | RECESS ANGLE | 90.0 DEGREES NOMINAL | | RECESS DIAMETER | 3.150 INCHES NOMINAL | | STYLE DESIGNATOR | RECESSED | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS1 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633,CLASS FE/ZN 13,TYPE 2 ASSN STD 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL |
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