| Item Name | Washer Key |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-941-0181 (009410181) |
| NCB Code | USA (00) |
| Manufacturer | Atomic Energy Commission, United Technologies Corporation, Turbo Power And Marine System Inc, Triple A Spring Limited, Spartan Aerospace Llc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.585 INCHES MINIMUM AND 0.595 INCHES MAXIMUM |
| ABKY | EXTERNAL PREBENT KEY LENGTH | 0.080 INCHES MINIMUM AND 0.100 INCHES MAXIMUM |
| ABLD | EXTERNAL TAPERED KEY WIDTH | 0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM |
| ABLF | EXTERNAL PREBENT KEY WIDTH | 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM |
| ABLS | DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.412 INCHES MINIMUM AND 0.422 INCHES MAXIMUM |
| ABMQ | EXTERNAL KEY QUANTITY | 3 |
| ABPX | MATERIAL THICKNESS | 0.038 INCHES MINIMUM AND 0.040 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL COMP 321 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Relevant Components for NSN - 5310-00-941-0181, 5310009410181 | ||||
| 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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