| Item Name | Washerrecessed |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-059-5228 (000595228) |
| NCB Code | USA (00) |
| Manufacturer | Leonardo Spa Aerostructure Division, Inspektorat Wsparcia Sil Zbrojnych, Nimikkeistokeskus Ncb Finland, Military Standards Corp |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.378 INCHES MINIMUM AND 0.388 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM |
| ABMD | RECESS DIAMETER | 0.435 INCHES NOMINAL |
| ABPX | MATERIAL THICKNESS | 0.107 INCHES MINIMUM AND 0.117 INCHES MAXIMUM |
| CQFM | HARDNESS RATING | 29.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM |
| CQJW | TOP RECESS DIAMETER | 0.435 INCHES NOMINAL |
| CRKG | BOTTOM RECESS ANGLE | 90.000 DEGREES NOMINAL |
| CRSD | TOP RECESS ANGLE | 90.000 DEGREES NOMINAL |
| CSML | BOTTOM RECESS DIAMETER | 0.435 INCHES NOMINAL |
| CSYM | SURFACE FINISH | 63.0 MICROINCHES BOTTOM |
| CSYM | SURFACE FINISH | 63.0 MICROINCHES TOP |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5525 ASSN STD 1ST MATERIAL RESPONSE OVERALL OR AMS 5518 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | RECESSED BOTH SIDES |
| Relevant Components for NSN - 5310-00-059-5228, 5310000595228 | ||||
| 5320-01-318-6843 (5320013186843) | 5340-01-557-4760 (5340015574760) | 5340-00-336-3776 (5340003363776) | 5340-01-560-8528 (5340015608528) | |
| 5330-01-684-2979 (5330016842979) | 5310-01-185-8686 (5310011858686) | 5360-00-394-4491 (5360003944491) | 5320-01-267-6376 (5320012676376) | |
| 5315-00-432-8021 (5315004328021) | 5315-01-271-9296 (5315012719296) | 5340-01-353-1927 (5340013531927) | 5320-01-413-1816 (5320014131816) | |
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