The Nut,self-Locking,assembled Washe, cataloged under National Stock Number 5310-01-027-4680, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-027-4680 |
| Item Name | Nut,self-Locking,assembled Washe |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Washer Outside Diameter | 1.677 INCHES MINIMUM AND 1.707 INCHES MAXIMUM IN |
| Width Across Flats | 1.427 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN |
| Bearing Surface Finish | 125.0 MICROINCHES |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE WASHER |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 250.0 FAHRENHEIT MAXIMUM DEGF |
| Material Document and Classification | QQ-A-225/6,T4 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-250/13,T6 FED SPEC 2ND MATERIAL RESPONSE WASHER |
| Material Document and Classification | AMS 5024 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5020 ASSN STD 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 3RD MATERIAL RESPONSE OR AMS 6323 ASSN STD 3RD MATERIAL RESPONSE OR AMS 6325 ASSN STD 3RD MATERIAL RESPONSE OR AMS 6327 ASSN STD 3RD MATERIAL RESPONSE OR AMS 6358 ASSN STD 3RD MATERIAL RESPONSE NUT |
| Nut Counterbore Depth | 0.524 INCHES MINIMUM AND 0.544 INCHES MAXIMUM NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.000 INCHES IN |
| Counterbore Diameter | 1.205 INCHES MINIMUM AND 1.215 INCHES MAXIMUM NUT IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Surface Treatment | CADMIUM AND CHROMATE NUT |
| Surface Treatment | CHROMATE WASHER |
| Nut Style | FLAT WITH TURNED BACK EDGE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 1137 OR STEEL COMP 11L37 OR STEEL COMP 8740 NUT |
| Material | PLASTIC NYLON LOCKING INSERT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MS21224-16 | 5/9 Secondary reference U.S. Government activity |
| MS21224-16 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-027-4680 is a Nut,self-Locking,assembled Washe, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-027-4680: Overall Height: 1.162 INCHES MINIMUM AND 1.202 INCHES MAXIMUM IN; Washer Outside Diameter: 1.677 INCHES MINIMUM AND 1.707 INCHES MAXIMUM IN; Width Across Flats: 1.427 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN; Bearing Surface Finish: 125.0 MICROINCHES. 21 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.