The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-645-3079, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-645-3079 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Lubrication | SOLUBLE LUBRICANT |
| Width Across Flats | 0.336 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS2700 NATIONAL STD SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UNJC |
| Hole Configuration Style | CONFIGURATION B |
| Material Document and Classification | MS5688 NATIONAL STD SINGLE MATERIAL RESPONSE AND MS5640 NATIONAL STD SINGLE MATERIAL RESPONSE AND STM A 581/A 582M ASSN STD SINGLE MATERIAL RESPONSE AND STM A582/ A 582M ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.1640 INCHES IN |
| Specification/standard Data | 96906-MS21044 NATIONAL STD/SPEC |
| Locking Feature | FREE-RUNNING ALL METAL DESIGN |
| Nut Height | 0.091 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE NUT |
| Inside Width Across Flats | 0.188 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 302 AND STEEL COMP 303 AND STEEL COMP 304 NUT |
| Bearing Surface Type | CHAMFERED |
| Hole Type and Quantity | 1 TAPPED |
| 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 |
|---|---|
| NASM21044C08 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-645-3079 is a Nut,self-Locking,hexagon, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-645-3079: Lubrication: SOLUBLE LUBRICANT; Width Across Flats: 0.336 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS2700 NATIONAL STD SINGLE TREATMENT RESPONSE NUT; Thread Series: UNJC. 19 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.