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National Stock Number: 5310-00-105-3944
Federal Supply Class: 5310
National Item Identification Number: 001053944
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:
GW10F4 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM | HOLE DIAMETER | 0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM | OUTSIDE DIAMETER | 0.500 INCHES NOMINAL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | MATERIAL THICKNESS | 0.063 INCHES NOMINAL | MATERIAL | STEEL OVERALL | MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH | RECESS DIAMETER | 0.290 INCHES NOMINAL | RECESS ANGLE | 90.0 DEGREES NOMINAL | SPECIAL FEATURES | OD CHAMFEREDON RECESSED SIDE 45.0 DEG 0.030 IN MIN 0.040 IN MAX DEEP | STYLE DESIGNATOR | RECESSED | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
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