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) | 00-766-4243 (007664243) |
| NCB Code | USA (00) |
| Manufacturer | United Technologies Corporation, Triple A Spring Limited, Alinabal Holdings Corporation, Turbo Power And Marine System Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.590 INCHES MINIMUM AND 0.600 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.900 INCHES MINIMUM AND 0.920 INCHES MAXIMUM |
| ABLD | EXTERNAL TAPERED KEY WIDTH | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| ABLS | DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.537 INCHES MINIMUM AND 0.547 INCHES MAXIMUM |
| ABMM | SPLIT KEY LENGTH | 0.195 INCHES MINIMUM AND 0.215 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.056 INCHES MINIMUM AND 0.068 INCHES MAXIMUM |
| CSFW | ANGLE BETWEEN EXTERNAL KEYS | 78.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| CSKN | EXTERNAL PREBENT KEY ANGLE | 20.0 DEGREES MINIMUM AND 40.0 DEGREES MAXIMUM |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5370 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| ABKY | EXTERNAL PREBENT KEY LENGTH | 0.130 INCHES MINIMUM AND 0.170 INCHES MAXIMUM |
| ABLF | EXTERNAL PREBENT KEY WIDTH | 0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM |
| ABLX | OVERALL DISTANCE INCLUDING KEYS | 1.167 INCHES MINIMUM AND 1.207 INCHES MAXIMUM |
| ABMQ | EXTERNAL KEY QUANTITY | 1 |
| MATT | MATERIAL | STEEL COMP 304L OVERALL |
| SFTT | SURFACE TREATMENT | SILVER OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | KEY |
| Relevant Components for NSN - 5310-00-766-4243, 5310007664243 | ||||
| 5355-00-582-7370 (5355005827370) | 5340-01-492-4288 (5340014924288) | 5340-00-523-3711 (5340005233711) | 5330-01-275-9444 (5330012759444) | |
| 5340-01-238-2053 (5340012382053) | 5365-01-693-2245 (5365016932245) | 5331-01-258-8240 (5331012588240) | 5365-01-672-1629 (5365016721629) | |
| 5365-01-432-4280 (5365014324280) | 5365-01-654-1906 (5365016541906) | 5340-01-451-0804 (5340014510804) | 5340-01-489-6012 (5340014896012) | |
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