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National Stock Number:
5310-00-326-3721
Federal Supply Class:
5310
National Item Identification Number:
003263721
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:
| A51B25129-12 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | A51B25129-12 | 61174 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | A51B25129-12 | 79RG9 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
| MATERIAL | STEEL OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6359 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND | | 42.0 ROCKWELL C MAXIMUM | | STYLE DESIGNATOR | RECESSED | | HOLE DIAMETER | 1.135 INCHES MINIMUM AND | | 1.150 INCHES MAXIMUM | | OUTSIDE DIAMETER | 1.970 INCHES MINIMUM AND | | 2.030 INCHES MAXIMUM | | RECESS DIAMETER | 1.375 INCHES NOMINAL | | MATERIAL THICKNESS | 0.188 INCHES NOMINAL | | RECESS ANGLE | 90.0 DEGREES NOMINAL | | HEAT TREATMENT | QUENCHED AND | | TEMPERED | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 61174 | | DESIGN CONTROL REFERENCE | A51B25129-12 |
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