The Valve,hold,boom Hoist Cylinder, cataloged under National Stock Number 4820-01-437-4220, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Curtiss-Wright Controls Integrated Sensing, Inc. Dba Predator Systems. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-437-4220 |
| Primary Part Number | 230059-1 |
| Item Name | Valve,hold,boom Hoist Cylinder |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Curtiss-Wright Controls Integrated Sensing, Inc. Dba Predator Systems |
| Status | ACTIVE |
| Adjustable Pressure Range | +1085.0 TO 2625.0 POUNDS PER SQUARE INCH LBS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 230059-1 PRIMARY | Curtiss-Wright Controls Integrated Sensing, Inc. Dba Predator Systems (USA) |
| Reference | Meaning |
|---|---|
| 7577435-001 | 5/9 Secondary reference General Dynamics Land Systems Inc. |
| 7577435 | 7/2 Vendor item drawing reference General Dynamics Land Systems Inc. |
NSN 4820-01-437-4220 is a Valve,hold,boom Hoist Cylinder, manufactured by Curtiss-Wright Controls Integrated Sensing, Inc. Dba Predator Systems, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-437-4220 has 1 manufacturer part number on file: 230059-1 (Curtiss-Wright Controls Integrated Sensing, Inc. Dba Predator Systems).
Key specifications for 230059-1: Adjustable Pressure Range: +1085.0 TO 2625.0 POUNDS PER SQUARE INCH LBS; Special Features: EXT. THD. CARTRIDGE TYPE; FOR MANIFOLD ASSEMBLY; STEEL; End Item Identification: AIRCRAFT (AC-130A, AC-130H, MC-130H, EC-130E, HC-130 A. 1 specification is 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 4820-01-437-4220 has DEMIL Code B. 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.