The Nut,plain,round, cataloged under National Stock Number 5310-00-674-8455, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Librascope Corporation. Government technical data includes 12 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-674-8455 |
| Primary Part Number | 310476 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lockheed Martin Librascope Corporation |
| Status | ACTIVE |
| Thread Series | UNF |
| Hole Configuration Style | CONFIGURATION J |
| Nut Counterbore Depth | 0.145 INCHES NOMINAL NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Nut Diameter | 0.562 INCHES NOMINAL IN |
| Counterbore Diameter | 0.317 INCHES NOMINAL NUT IN |
| Nut Thickness | 0.297 INCHES NOMINAL IN |
| Drilled Hole Diameter | 0.052 INCHES NOMINAL IN |
| Thread Class | 1B |
| Thread Quantity Per Inch | 24 |
| Hole Type and Quantity | 2 DRILLED |
| 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 |
|---|---|
| 310476 PRIMARY | Lockheed Martin Librascope Corporation (USA) |
NSN 5310-00-674-8455 is a Nut,plain,round, manufactured by Lockheed Martin Librascope Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-674-8455 has 1 manufacturer part number on file: 310476 (Lockheed Martin Librascope Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5985-01-618-8745. Verify interchangeability with system specifications before substitution.
Key specifications for 310476: Thread Series: UNF; Hole Configuration Style: CONFIGURATION J; Nut Counterbore Depth: 0.145 INCHES NOMINAL NUT IN; Thread Direction: RIGHT-HAND. 12 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.