| Item Name | Washer Key |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-151-9027 (001519027) |
| NCB Code | USA (00) |
| Manufacturer | Bae Systems Inc, British Aerospace Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.890 INCHES MINIMUM AND 0.895 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 1.245 INCHES MINIMUM AND 1.255 INCHES MAXIMUM |
| ABKY | EXTERNAL PREBENT KEY LENGTH | 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM |
| ABLD | EXTERNAL TAPERED KEY WIDTH | 0.600 INCHES MINIMUM AND 0.610 INCHES MAXIMUM |
| ABLF | EXTERNAL PREBENT KEY WIDTH | 0.260 INCHES MINIMUM AND 0.265 INCHES MAXIMUM |
| ABLS | DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.795 INCHES MINIMUM AND 0.800 INCHES MAXIMUM |
| ABLX | OVERALL DISTANCE INCLUDING KEYS | 1.692 INCHES NOMINAL |
| ABMM | SPLIT KEY LENGTH | 0.235 INCHES NOMINAL |
| ABMQ | EXTERNAL KEY QUANTITY | 3 |
| ABPX | MATERIAL THICKNESS | 0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM |
| CSFW | ANGLE BETWEEN EXTERNAL KEYS | 90.0 DEGREES NOMINAL |
| CSKN | EXTERNAL PREBENT KEY ANGLE | 15.0 DEGREES NOMINAL |
| MATT | MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | A-55510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | KEY |
| Components Related to NSN - 5310-00-151-9027, 5310001519027 | ||||
| 5330-01-334-7310 (5330013347310) | 5365-00-969-6150 (5365009696150) | 5310-01-669-3902 (5310016693902) | 5340-01-413-2057 (5340014132057) | |
| 5325-00-364-9598 (5325003649598) | 5360-00-567-5070 (5360005675070) | 5340-01-491-4788 (5340014914788) | 5340-01-026-3025 (5340010263025) | |
| 5365-01-155-7183 (5365011557183) | 5355-00-492-8457 (5355004928457) | 5365-00-145-1236 (5365001451236) | 5307-00-245-8721 (5307002458721) | |
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