The Nut,plain,round, cataloged under National Stock Number 5310-01-182-7578, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rosomak S.a. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Rosomak S.a (CAGE 0291H); Coronado Manufacturing, Inc. (CAGE 26879); Al-Vall Engineering Co. Inc. (CAGE 8T882); W Machine Works Inc (CAGE 0BJV5) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-182-7578 |
| Primary Part Number | 387-3125 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rosomak S.a |
| Status | ACTIVE |
| 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 |
|---|---|
| 387-3125 | Rosomak S.a (POL) |
| 387-3125 | Coronado Manufacturing, Inc. (USA) |
| 387-3125 | Al-Vall Engineering Co. Inc. (USA) |
| 387-3125 | W Machine Works Inc (USA) |
| Reference | Meaning |
|---|---|
| 387-3125 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| 387-3125 | 5/9 Secondary reference The Boeing Company |
| 387-3125 | 3/9 Design control — primary reference Alliant Techsystems Operations Llc |
| 387-3125 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corp Div Weapon System |
NSN 5310-01-182-7578 is a Nut,plain,round, manufactured by Rosomak S.a, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-182-7578 has 4 manufacturer part numbers on file: 387-3125 (Rosomak S.a), 387-3125 (Coronado Manufacturing, Inc.), 387-3125 (Al-Vall Engineering Co. Inc.), 387-3125 (W Machine Works Inc).
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.