The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-366-4544, 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 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-366-4544 |
| Primary Part Number | 803-6397304-XX-07 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 0.630 INCHES NOMINAL IN |
| Thread Series | UNF |
| Material Document and Classification | ASTM A582 TY303 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nut Counterbore Depth | 0.075 INCHES MINIMUM AND 0.080 INCHES MAXIMUM FIRST END IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Counterbore Diameter | 0.565 INCHES MINIMUM AND 0.567 INCHES MAXIMUM FIRST END IN |
| Nut Height | 0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Countersink Angle | 45.0 DEGREES NOMINAL FIRST END |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 303 OVERALL |
| 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 |
|---|---|
| 803-6397304-XX-07 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5310-01-366-4544 is a Nut,plain,hexagon, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-366-4544 has 1 manufacturer part number on file: 803-6397304-XX-07 (Naval Sea Systems Command).
Key specifications for 803-6397304-XX-07: Width Across Flats: 0.630 INCHES NOMINAL IN; Thread Series: UNF; Material Document and Classification: ASTM A582 TY303 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Nut Counterbore Depth: 0.075 INCHES MINIMUM AND 0.080 INCHES MAXIMUM FIRST END IN. 14 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.