| Item Name | Washer Key |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-209-5290 (002095290) |
| NCB Code | USA (00) |
| Manufacturer | Nimikkeistokeskus Ncb Finland, Inspektorat Wsparcia Sil Zbrojnych, National Aerospace Standards Com, Naval Aircraft Standards |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.762 INCHES MINIMUM AND 0.782 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 1.120 INCHES MINIMUM AND 1.140 INCHES MAXIMUM |
| ABLK | INTERNAL PREBENT KEY WIDTH | 0.109 INCHES MINIMUM AND 0.119 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.071 INCHES NOMINAL |
| CQFW | DISTANCE FROM KEY CENTER TO WIRE HOLE CENTER | 0.185 INCHES MINIMUM AND 0.191 INCHES MAXIMUM |
| CRZZ | WIRE HOLE DIAMETER | 0.071 INCHES NOMINAL |
| MATT | MATERIAL | STEEL COMP 1095 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-7947 COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| STYL | STYLE DESIGNATOR | INTERNAL PREBENT KEY |
| Components Related to NSN - 5310-00-209-5290, 5310002095290 | ||||
| 5330-00-154-7423 (5330001547423) | 5365-01-326-1135 (5365013261135) | 5306-01-053-6961 (5306010536961) | 5310-00-523-2141 (5310005232141) | |
| 5325-01-240-1213 (5325012401213) | 5360-01-089-4004 (5360010894004) | 5330-01-089-6878 (5330010896878) | 5330-01-125-9042 (5330011259042) | |
| 5365-01-447-3568 (5365014473568) | 5340-00-967-7591 (5340009677591) | 5305-00-733-6616 (5305007336616) | 5310-01-278-4520 (5310012784520) | |
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