| Item Name | Washer Key |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-007-7975 (000077975) |
| NCB Code | USA (00) |
| Manufacturer | National Aerospace Standards Com |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 1.550 INCHES NOMINAL |
| ABKV | OUTSIDE DIAMETER | 1.844 INCHES NOMINAL |
| ABLF | EXTERNAL PREBENT KEY WIDTH | 0.240 INCHES NOMINAL |
| ABLX | OVERALL DISTANCE INCLUDING KEYS | 1.916 INCHES MINIMUM AND 1.921 INCHES MAXIMUM |
| CQFM | HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| HUES | COLOR | BLACK OVERALL |
| MATT | MATERIAL | STEEL COMP 1050 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5085 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | OXIDE FILM OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CL1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| ZZZK | SPECIFICATION/STANDARD DATA | 80205-NAS1443 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Components Related to NSN - 5310-00-007-7975, 5310000077975 | ||||
| 5320-01-625-8117 (5320016258117) | 5305-01-643-3347 (5305016433347) | 5365-01-122-8885 (5365011228885) | 5330-01-382-8170 (5330013828170) | |
| 5360-00-551-6874 (5360005516874) | 5306-01-044-5191 (5306010445191) | 5365-00-888-2513 (5365008882513) | 5305-00-282-0282 (5305002820282) | |
| 5310-01-201-3707 (5310012013707) | 5310-00-814-4076 (5310008144076) | 5342-00-200-5894 (5342002005894) | 5310-01-068-8899 (5310010688899) | |
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