The Arm Assembly,valve, cataloged under National Stock Number 4820-01-331-0178, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Arm Assembly,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (CAGE 09790) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-331-0178 |
| Primary Part Number | 83759 ITEM 3 |
| Item Name | Arm Assembly,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator |
| 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 |
|---|---|
| 83759 ITEM 3 | Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA) |
| 83958-1 | Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA) |
| Reference | Meaning |
|---|---|
| ES-83958-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-331-0178 is a Arm Assembly,valve, manufactured by Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-331-0178 has 2 manufacturer part numbers on file: 83759 ITEM 3 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator), 83958-1 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator).
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.