The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-643-2084, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-643-2084 |
| Primary Part Number | 845-7526489-2C-12-B-3-N-G-029 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.6250 INCHES IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.378 INCHES MINIMUM AND 0.407 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | COPPER ALLOY FIRST END |
| Bearing Surface Type | FLAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 845-7526489-2C-12-B-3-N-G-029 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 845-7526489 | D/9 Drawing number reference only Naval Sea Systems Command |
| 845-7526489-XX-XX-X-X-X-X-029 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5310-01-643-2084 is a Nut,self-Locking,hexagon, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-643-2084 has 1 manufacturer part number on file: 845-7526489-2C-12-B-3-N-G-029 (Naval Sea Systems Command).
Key specifications for 845-7526489-2C-12-B-3-N-G-029: Width Across Flats: 0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.6250 INCHES IN. 11 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.