The Valve,linear,directional Control, cataloged under National Stock Number 4820-01-657-6963, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Saab, Inc Div Surveillance. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-657-6963 |
| Primary Part Number | YL1540/01 |
| Item Name | Valve,linear,directional Control |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Saab, Inc Div Surveillance |
| 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 |
|---|---|
| YL1540/01 | Saab, Inc Div Surveillance (USA) |
| Reference | Meaning |
|---|---|
| 10426764 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| YL1540/01 | 3/9 Design control — primary reference Saab Ab (publ) - Business Area Surveillance |
| YL1540/01 | C/1 Advisory reference — outside the item-of-supply concept Saab Aktiebolag Div Radar Solutions |
NSN 4820-01-657-6963 is a Valve,linear,directional Control, manufactured by Saab, Inc Div Surveillance, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-657-6963 has 1 manufacturer part number on file: YL1540/01 (Saab, Inc Div Surveillance).
Key specifications for YL1540/01: Part Name Assigned by Controlling Agency: MANUAL VALVE; End Item Identification: SEA GIRAFFE DAU. 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.