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National Stock Number:
5310-01-306-2807
Federal Supply Class:
5310
National Item Identification Number:
013062807
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:
| AS102584-S4 | 10630 | ANILLO INDUSTRIES LLC | | HS53930S4 | 02731 | MCDONNELL DOUGLAS HELICOPTER CO INC | | HS5393S4 | 02731 | MCDONNELL DOUGLAS HELICOPTER CO INC | | SL207088-S4 | 16258 | SPACE-LOK, INC. | | WC22S-4 | 56878 | SPS TECHNOLOGIES, LLC | | HS5393S4 | 8V613 | THE BOEING COMPANY |
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Techincal Specification:
| HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM | | HOLE DIAMETER | 0.251 INCHES MINIMUM AND 0.255 INCHES MAXIMUM | | OUTSIDE DIAMETER | 0.486 INCHES MINIMUM AND 0.496 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 5085 ASSN STD 2ND MATERIAL RESPONSE OVERALL | | MATERIAL THICKNESS | 0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM | | MATERIAL | STEEL COMP 4130 OR STEEL COMP 1050 OVERALL | | PRECIOUS MATERIAL AND LOCATION | OUTSIDE SURFACE SILVER | | PRECIOUS MATERIAL | SILVER | | RECESS ANGLE | 90.0 DEGREES NOMINAL | | RECESS DIAMETER | 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM | | STYLE DESIGNATOR | RECESSED | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | SILVER OVERALL |
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