AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Washer Key |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-407-4105 (004074105) |
| NCB Code | USA (00) |
| Manufacturer | United Technologies Corporation, Turbo Power And Marine System Inc, Rogerson Kratos, Nielsen Hardware Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.330 INCHES MINIMUM AND 0.340 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.502 INCHES MINIMUM AND 0.507 INCHES MAXIMUM |
| ABKY | EXTERNAL PREBENT KEY LENGTH | 0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM |
| ABLF | EXTERNAL PREBENT KEY WIDTH | 0.140 INCHES MINIMUM AND 0.145 INCHES MAXIMUM |
| ABLS | DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM |
| ABLX | OVERALL DISTANCE INCLUDING KEYS | 0.705 INCHES MINIMUM AND 0.725 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM |
| HEAT | HEAT TREATMENT | AS FABRICATED |
| MATT | MATERIAL | STEEL COMP 321 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | KEY |
| Relevant Components for NSN - 5310-00-407-4105, 5310004074105 | ||||
| 5365-01-101-3819 (5365011013819) | 5305-01-006-9246 (5305010069246) | 5310-00-639-2818 (5310006392818) | 5310-01-332-9051 (5310013329051) | |
| 5330-01-399-2381 (5330013992381) | 5340-01-496-5144 (5340014965144) | 5342-00-326-6390 (5342003266390) | 5305-01-361-1154 (5305013611154) | |
| 5305-01-516-4729 (5305015164729) | 5330-15-007-8953 (5330150078953) | 5340-01-078-1350 (5340010781350) | 5310-01-471-5429 (5310014715429) | |
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