The Nut,self-Locking,cap, cataloged under National Stock Number 5310-01-212-4593, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-212-4593 |
| Item Name | Nut,self-Locking,cap |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Width Across Flats | 0.5510 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN |
| Bearing Surface Finish | 110.0 MICROINCHES |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| Thread Series | UNF |
| Temp Rating | 250.0 FAHRENHEIT NOMINAL DEGF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT OR PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.620 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL EXCEPT INSERT |
| Nut Style | CAP |
| Thread Class | 2B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL EXCEPT INSERT |
| Material | PLASTIC LOCKING INSERT |
| Bearing Surface Type | CHAMFERED |
| 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 |
|---|---|
| MS51865-12 | 2/2 Government specification standardization U.S. Government activity |
| MIL-N-45913 | 4/1 Identification reference U.S. Government activity |
NSN 5310-01-212-4593 is a Nut,self-Locking,cap, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-212-4593: Lubrication: DRY FILM LUBRICANT; Width Across Flats: 0.5510 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN; Bearing Surface Finish: 110.0 MICROINCHES; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT. 17 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.