| Item Name | Washer Key |
| INC Code | 01869 |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 01-053-3983 (010533983) |
| NCB Code | USA (01) |
| Manufacturer | Boeing Company The, Janco Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.625 INCHES NOMINAL |
| ABKY | EXTERNAL PREBENT KEY LENGTH | 0.060 INCHES NOMINAL |
| ABLK | INTERNAL PREBENT KEY WIDTH | 0.065 INCHES NOMINAL |
| ABPX | MATERIAL THICKNESS | 0.032 INCHES NOMINAL |
| CQFM | HARDNESS RATING | 57.0 ROCKWELL B MINIMUM AND 77.0 ROCKWELL B MAXIMUM |
| MATT | MATERIAL | COPPER ALLOY OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-613,FORM SHEET,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | NICKEL OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-N-290,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Relevant Components for NSN - 5310-01-053-3983, 5310010533983 | ||||
| 5310-01-011-9703 (5310010119703) | 5310-01-631-4489 (5310016314489) | 5310-00-020-9053 (5310000209053) | 5310-01-041-3831 (5310010413831) | |
| 5310-01-180-5326 (5310011805326) | 5310-01-187-5440 (5310011875440) | 5310-00-092-6831 (5310000926831) | 5310-01-210-4885 (5310012104885) | |
| 5310-00-474-5240 (5310004745240) | 5310-00-474-3114 (5310004743114) | 5310-00-159-9146 (5310001599146) | 5310-01-528-9271 (5310015289271) | |
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