| Item Name | Washer Recessed |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-125-5364 (001255364) |
| NCB Code | USA (00) |
| Manufacturer | Parker Hannifin Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.266 INCHES NOMINAL |
| ABKV | OUTSIDE DIAMETER | 0.4375 INCHES MINIMUM AND 0.4377 INCHES MAXIMUM |
| ABKW | OVERALL HEIGHT | 0.0445 INCHES MINIMUM AND 0.0455 INCHES MAXIMUM |
| ABMD | RECESS DIAMETER | 0.326 INCHES NOMINAL |
| ABMH | RECESS DEPTH | 0.030 INCHES NOMINAL |
| ABPX | MATERIAL THICKNESS | 0.455 INCHES NOMINAL |
| CQFM | HARDNESS RATING | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM |
| CSTM | RECESS ANGLE | 90.0 DEGREES NOMINAL |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES BOTTOM |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES TOP |
| FEAT | SPECIAL FEATURES | BOTH BEARING SURFACES CHAMFERED ON OD 0.010 IN. TO 0.015 IN. BY 45 DEG |
| MATT | MATERIAL | STEEL OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | RECESSED |
| Components Related to NSN - 5310-00-125-5364, 5310001255364 | ||||
| 5330-00-038-4345 (5330000384345) | 5305-01-191-2462 (5305011912462) | 5365-00-898-3506 (5365008983506) | 5315-01-424-1290 (5315014241290) | |
| 5330-01-696-0897 (5330016960897) | 5330-01-561-7601 (5330015617601) | 5342-00-408-9183 (5342004089183) | 5310-00-981-2299 (5310009812299) | |
| 5340-01-523-8925 (5340015238925) | 5342-01-649-3882 (5342016493882) | 5310-00-943-5411 (5310009435411) | 5340-01-569-9497 (5340015699497) | |
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