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National Stock Number:
5310-01-125-1230
Federal Supply Class:
5310
National Item Identification Number:
011251230
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:
| 65126-11316-101 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| MATERIAL | STEEL COMP 4130 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND | | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND | | 32.0 ROCKWELL C MAXIMUM | | STYLE DESIGNATOR | RECESSED BOTH SIDES | | HOLE DIAMETER | 0.517 INCHES MINIMUM AND | | 0.522 INCHES MAXIMUM | | OUTSIDE DIAMETER | 0.812 INCHES NOMINAL | | MATERIAL THICKNESS | 0.070 INCHES MINIMUM AND | | 0.080 INCHES MAXIMUM | | TOP RECESS DIAMETER | 0.625 INCHES MINIMUM AND | | 0.640 INCHES MAXIMUM | | BOTTOM RECESS DIAMETER | 0.625 INCHES MINIMUM AND | | 0.640 INCHES MAXIMUM | | BOTTOM RECESS ANGLE | 15.0 DEGREES NOMINAL | | TOP RECESS ANGLE | 15.0 DEGREES NOMINAL | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
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