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) | 00-678-9544 (006789544) |
| NCB Code | USA (00) |
| Manufacturer | United Technologies Corporation, Tokyo Judoi Kogyo K K, Tokyo Judogi Kogyo Co |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.546 INCHES MINIMUM AND 0.556 INCHES MAXIMUM |
| ABKY | EXTERNAL PREBENT KEY LENGTH | 0.118 INCHES MINIMUM AND 0.138 INCHES MAXIMUM |
| ABLD | EXTERNAL TAPERED KEY WIDTH | 0.340 INCHES MINIMUM AND 0.350 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 | 0.325 INCHES MINIMUM AND 0.335 INCHES MAXIMUM |
| ABLX | OVERALL DISTANCE INCLUDING KEYS | 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM |
| ABMM | SPLIT KEY LENGTH | 0.175 INCHES MINIMUM AND 0.180 INCHES MAXIMUM |
| ABMQ | EXTERNAL KEY QUANTITY | 1 |
| ABPX | MATERIAL THICKNESS | 0.034 INCHES MINIMUM AND 0.042 INCHES MAXIMUM |
| CSFW | ANGLE BETWEEN EXTERNAL KEYS | 60.0 DEGREES NOMINAL |
| CSKN | EXTERNAL PREBENT KEY ANGLE | 30.0 DEGREES NOMINAL |
| 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 - 5310-00-678-9544, 5310006789544 | ||||
| 5305-00-151-0390 (5305001510390) | 5305-00-162-0212 (5305001620212) | 5330-01-021-6193 (5330010216193) | 5306-01-667-2305 (5306016672305) | |
| 5305-00-702-7578 (5305007027578) | 5306-01-467-0619 (5306014670619) | 5340-14-507-0973 (5340145070973) | 5330-01-545-5049 (5330015455049) | |
| 5331-01-433-9967 (5331014339967) | 5330-01-176-0563 (5330011760563) | 5330-20-001-0516 (5330200010516) | 5305-00-550-9932 (5305005509932) | |
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