The Valve,safety Relief, cataloged under National Stock Number 4820-01-421-8074, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is D & D Machinery & Sales Inc. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-421-8074 |
| Primary Part Number | 01235400 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | D & D Machinery & Sales Inc |
| 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 |
|---|---|
| 01235400 PRIMARY | D & D Machinery & Sales Inc (USA) |
| Reference | Meaning |
|---|---|
| 01235400 | 5/9 Secondary reference Terex Aerials Inc |
NSN 4820-01-421-8074 is a Valve,safety Relief, manufactured by D & D Machinery & Sales Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-421-8074 has 1 manufacturer part number on file: 01235400 (D & D Machinery & Sales Inc).
Key specifications for 01235400: End Item Identification: 4940-01-385-1794; SUPPORT EQUIP, C-17A A. 0 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.