The Mount and Nut, cataloged under National Stock Number 4820-00-322-5503, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Norgren C a Co. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Mount and Nut |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Norgren C a Co (CAGE 43990); Rs Components Limited (CAGE K2504) |
| Parameter | Value |
|---|---|
| NSN | 4820-00-322-5503 |
| Primary Part Number | 18-025-003 |
| Item Name | Mount and Nut |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Norgren C a Co |
| 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 |
|---|---|
| 18-025-003 PRIMARY | Norgren C a Co (USA) |
| 123-923 | Rs Components Limited (GBR) |
| Reference | Meaning |
|---|---|
| 3307719-1 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4820-00-322-5503 is a Mount and Nut, manufactured by Norgren C a Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-322-5503 has 2 manufacturer part numbers on file: 18-025-003 (Norgren C a Co), 123-923 (Rs Components Limited).
2 possible matches (shared part number, not a government interchangeability claim): 5840-00-688-7027, 6680-01-412-5827. Verify interchangeability with system specifications before substitution.
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.