The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-428-5935, 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 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-428-5935 |
| Primary Part Number | 566-6405742 FN SDGF-F26 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 0.625 INCHES NOMINAL IN |
| Thread Series | UNF |
| Material Document and Classification | QQ-N-281 CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | LEFT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | NICKEL ALLOY R-405 OVERALL |
| 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 |
|---|---|
| 566-6405742 FN SDGF-F26 PRIMARY | Naval Sea Systems Command (USA) |
| 6405736-C17 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5310-01-428-5935 is a Nut,plain,hexagon, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-428-5935 has 2 manufacturer part numbers on file: 566-6405742 FN SDGF-F26 (Naval Sea Systems Command), 6405736-C17 (Naval Sea Systems Command).
Key specifications for 566-6405742 FN SDGF-F26: Width Across Flats: 0.625 INCHES NOMINAL IN; Thread Series: UNF; Material Document and Classification: QQ-N-281 CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: LEFT-HAND. 8 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.