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National Stock Number:
5310-01-053-2898
Federal Supply Class:
5310
National Item Identification Number:
010532898
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:
| 430R308H01 | 97942 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
| HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM | | HOLE DIAMETER | 0.529 INCHES MINIMUM AND 0.536 INCHES MAXIMUM | | OUTSIDE DIAMETER | 0.811 INCHES MINIMUM AND 0.813 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL THICKNESS | 0.090 INCHES NOMINAL | | MATERIAL | STEEL COMP 4140H OVERALL | | STYLE DESIGNATOR | RECESSED | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,CL1,TYPE II FED SPEC 1ST TREATMENT RESPONSE AND QQ-P-416,CL1,TYPE II FED SPEC 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
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