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National Stock Number:
5310-01-127-8061
Federal Supply Class:
5310
National Item Identification Number:
011278061
Description:
WASHER,SHOULDERED AND RECESSED
Detail:
A washer, round in shape, having a centrally located hole. One bearing surface is flat, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. Either or both of the bearing surfaces must be broken by a counterbore, countersink, or similar shaped recess. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use BEARING, SLEEVE; BUSHING, SLEEVE; or SPACER, SLEEVE. Excludes INSULATOR, WASHER and thrust type washers.
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Manufacturer Information:
| 65391-11610-101 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| COLOR | BLACK OVERALL | | HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM | | HOLE DIAMETER | 11.506 INCHES MINIMUM AND 11.516 INCHES MAXIMUM | | OUTSIDE DIAMETER | 12.680 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 COND C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL THICKNESS | 0.250 INCHES NOMINAL | | MATERIAL | STEEL COMP 4340 OVERALL | | RECESS ANGLE | 120.0 DEGREES NOMINAL | | RECESS DIAMETER | 12.010 INCHES NOMINAL | | SHOULDER DIAMETER | 12.320 INCHES NOMINAL | | SHOULDER HEIGHT | 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM | | STYLE DESIGNATOR | SHOULDERED AND RECESSED | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924 CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | OXIDE OVERALL |
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