The Seat,valve, cataloged under National Stock Number 4820-01-358-8900, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Nunamann & Associates Inc. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Seat,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Nunamann & Associates Inc (CAGE 3G6E2); Hale Hamilton (valves) Ltd Div Cad Uxbridge (CAGE K0207) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-358-8900 |
| Primary Part Number | NB43540 PL-7981 ITEM 14 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Nunamann & Associates Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| NB43540 PL-7981 ITEM 14 | Nunamann & Associates Inc (USA) |
| NB43540 PL-7981 ITEM 14 | Hale Hamilton (valves) Ltd Div Cad Uxbridge (GBR) |
| NC43709 | Hale Hamilton (valves) Ltd Div Cad Uxbridge (GBR) |
| Reference | Meaning |
|---|---|
| NB43540 PL-7981 ITEM 14 | 3/9 Design control — primary reference Gulf Coast Holdings, Inc Dba Unidynamics |
| NB43540 PL-7981 ITEM 14 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| NB43540 PL-7981 ITEM 14 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-358-8900 is a Seat,valve, manufactured by Nunamann & Associates Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-358-8900 has 3 manufacturer part numbers on file: NB43540 PL-7981 ITEM 14 (Nunamann & Associates Inc), NB43540 PL-7981 ITEM 14 (Hale Hamilton (valves) Ltd Div Cad Uxbridge), NC43709 (Hale Hamilton (valves) Ltd Div Cad Uxbridge).
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.