The Disk,valve, cataloged under National Stock Number 4820-01-174-6978, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk. Government technical data includes 10 specifications, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-174-6978 |
| Primary Part Number | 104631623 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk |
| Status | ACTIVE |
| Shank Diameter | 0.240 INCHES NOMINAL IN |
| Flange Seat to Disk End Height | 1.695 INCHES NOMINAL IN |
| FSC Application Data | VALVE,STEERING UNIT |
| Pressure Rating | 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Style Designator | POPPET |
| Material Document and Classification | AMS 6260, COMP E9310 ASSN STD SINGLE MATERIAL RESPONSE |
| Tip Diameter | 0.300 INCHES NOMINAL IN |
| Seat Angle | 45.0 DEGREES NOMINAL |
| Media for Which Designed | HYDRAULIC FLUID |
| Material | STEEL |
| 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 |
|---|---|
| 104631623 PRIMARY | Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk (GBR) |
NSN 4820-01-174-6978 is a Disk,valve, manufactured by Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-174-6978 has 1 manufacturer part number on file: 104631623 (Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk).
Key specifications for 104631623: Shank Diameter: 0.240 INCHES NOMINAL IN; Flange Seat to Disk End Height: 1.695 INCHES NOMINAL IN; FSC Application Data: VALVE,STEERING UNIT; Pressure Rating: 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS. 10 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.