| Item Name | Washer Key |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 01-194-3667 (011943667) |
| NCB Code | USA (01) |
| Manufacturer | Electro Switch Corp |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.478 INCHES MINIMUM AND 0.481 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.625 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |
| ABLB | INTERNAL PREBENT KEY LENGTH | 0.053 INCHES MINIMUM AND 0.058 INCHES MAXIMUM |
| ABLK | INTERNAL PREBENT KEY WIDTH | 0.067 INCHES NOMINAL |
| ABPX | MATERIAL THICKNESS | 0.025 INCHES NOMINAL |
| MATT | MATERIAL | COPPER ALLOY OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-611,COMP C,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | NICKEL OVERALL |
| STYL | STYLE DESIGNATOR | KEY |
| Relevant Components for NSN - 5310-01-194-3667, 5310011943667 | ||||
| 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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