| Item Name | Washer Recessed |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-531-8830 (005318830) |
| NCB Code | USA (00) |
| Manufacturer | The Boeing Company |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 1.640 INCHES MINIMUM AND 1.660 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 2.290 INCHES MINIMUM AND 2.310 INCHES MAXIMUM |
| ABMD | RECESS DIAMETER | 1.820 INCHES MINIMUM AND 1.840 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.125 INCHES NOMINAL |
| CSTM | RECESS ANGLE | 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM |
| HEAT | HEAT TREATMENT | NORMALIZED |
| MATT | MATERIAL | STEEL COMP 4130 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-T-6736 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL OR MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| STYL | STYLE DESIGNATOR | RECESSED |
| Components Related to NSN - 5310-00-531-8830, 5310005318830 | ||||
| 5325-01-017-8809 (5325010178809) | 5330-01-278-3019 (5330012783019) | 5365-01-304-3832 (5365013043832) | 5305-15-060-1487 (5305150601487) | |
| 5305-01-361-3193 (5305013613193) | 5330-01-259-4088 (5330012594088) | 5340-01-672-8342 (5340016728342) | 5342-00-452-9798 (5342004529798) | |
| 5310-01-175-0629 (5310011750629) | 5330-01-120-4149 (5330011204149) | 5331-01-441-4577 (5331014414577) | 5330-01-425-8795 (5330014258795) | |
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