The Valve,linear,directional Control, cataloged under National Stock Number 4820-01-128-9256, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Boeing Company Div Defense. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-128-9256 |
| Primary Part Number | 74B690146-101 |
| Item Name | Valve,linear,directional Control |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 74B690146-101 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 2770564-101 | 3/2 Design control — primary reference U.S. Government activity |
| 10124595 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 2770564-101 | 5/9 Secondary reference U.S. Government activity |
| 2770564 | D/9 Drawing number reference only U.S. Government activity |
| 2770564-101 | 5/1 Secondary reference Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations |
NSN 4820-01-128-9256 is a Valve,linear,directional Control, manufactured by The Boeing Company Div Defense, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-128-9256 has 1 manufacturer part number on file: 74B690146-101 (The Boeing Company Div Defense).
Key specifications for 74B690146-101: Special Features: BODY,ALUMINUM ALLOY,A356,ANODIZE; MEDIA HYDRAULIC FLUIDS,3000.0 PSI; 275.0 DEG 3 PORT CONNECTIONS. 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.
NSN 4820-01-128-9256 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.