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 | ||||
| 5365-00-981-3580 (5365009813580) | 5306-01-663-0372 (5306016630372) | 5330-00-259-1415 (5330002591415) | 5340-00-140-8006 (5340001408006) | |
| 5310-01-055-6080 (5310010556080) | 5340-01-571-9066 (5340015719066) | 5360-01-528-5575 (5360015285575) | 5340-01-254-4525 (5340012544525) | |
| 5310-01-456-0920 (5310014560920) | 5331-01-311-6975 (5331013116975) | 5330-00-147-6676 (5330001476676) | 5365-01-201-0770 (5365012010770) | |
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