The Nut,plain,round, cataloged under National Stock Number 5310-00-104-9356, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Triumph Actuation Systems - Connecticut, Llc. Government technical data includes 13 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 | 5310-00-104-9356 |
| Primary Part Number | 280891-1 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Triumph Actuation Systems - Connecticut, Llc |
| Status | ACTIVE |
| Width Across Flats | 2.875 INCHES NOMINAL IN |
| Thread Series | UN |
| Hole Configuration Style | CONFIGURATION J |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.500 INCHES IN |
| Nut Diameter | 3.000 INCHES NOMINAL IN |
| Nut Thickness | 0.191 INCHES NOMINAL IN |
| Drilled Hole Diameter | 0.062 INCHES NOMINAL IN |
| Nut Style | ROUND |
| Thread Class | 2B |
| Thread Quantity Per Inch | 16 |
| Material | ALUMINUM OVERALL |
| Hole Type and Quantity | 4 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 |
|---|---|
| 280891-1 PRIMARY | Triumph Actuation Systems - Connecticut, Llc (USA) |
NSN 5310-00-104-9356 is a Nut,plain,round, manufactured by Triumph Actuation Systems - Connecticut, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-104-9356 has 1 manufacturer part number on file: 280891-1 (Triumph Actuation Systems - Connecticut, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-610-2628. Verify interchangeability with system specifications before substitution.
Key specifications for 280891-1: Width Across Flats: 2.875 INCHES NOMINAL IN; Thread Series: UN; Hole Configuration Style: CONFIGURATION J; Thread Direction: RIGHT-HAND. 13 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.