The Valve Assembly, cataloged under National Stock Number 4820-01-366-0355, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Derbyshire Machine & Tool Co. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-366-0355 |
| Primary Part Number | 623620-6 |
| Item Name | Valve Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Derbyshire Machine & Tool Co |
| Status | ACTIVE |
| Valve Quantity | 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 623620-6 | Derbyshire Machine & Tool Co (USA) |
| Reference | Meaning |
|---|---|
| 623620-6 | 5/9 Secondary reference U.S. Government activity |
| 623620-6 | 5/9 Secondary reference U.S. Government activity |
| 623620-6 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-366-0355 is a Valve Assembly, manufactured by Derbyshire Machine & Tool Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-366-0355 has 1 manufacturer part number on file: 623620-6 (Derbyshire Machine & Tool Co).
Key specifications for 623620-6: Valve Quantity: 1; Special Features: CAPACITY SELECTOR,MOTORIZWD OPERATOR CONSTANT PRESSURE SYSTEM; End Item Identification: AIR LAUNCH & RECOVERY EQUIP. 1 specification is 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.