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National Stock Number: 5310-00-554-2560
Federal Supply Class: 5310
National Item Identification Number: 005542560
Description: WASHER,FINISHING
Detail: A WASHER OR CONE OR DISK SHAPE WITH A CENTRALLY LOCATED HOLE, DESIGNED TO ACCOMMODATE A FLAT OR OVAL HEAD SCREW AND PROVIDE ADDITIONAL BEARING AREA ON THE MATERIAL BEING FASTENED. IT MAY OR MAY NOT HAVE A FLUSH FLANGE FEATURE.
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Manufacturer Information:
| 63-1143 | 81205 | THE BOEING COMPANY | | 9633-27 | 13002 | GOODRICH CORPORATION |
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Techincal Specification:
| HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM | | HEAT TREATMENT | QUENCHED AND TEMPERED | | HOLE DIAMETER | 0.515 INCHES MINIMUM AND 0.520 INCHES MAXIMUM | | OUTSIDE DIAMETER | 2.000 INCHES NOMINAL | | OVERALL HEIGHT | 0.250 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626,COND C4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL THICKNESS | 0.160 INCHES NOMINAL | | MATERIAL | STEEL COMP 4140 OVERALL | | STYLE DESIGNATOR | FINISHING | | SURFACE TREATMENT | CADMIUM OVERALL |
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