The Valve,hold,boom Hoist Cylinder, cataloged under National Stock Number 4820-01-375-3499, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 4820-01-375-3499 |
| Primary Part Number | 131188-1 |
| Item Name | Valve,hold,boom Hoist Cylinder |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| Status | ACTIVE |
| Valve Operation Method | PILOT |
| 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 |
|---|---|
| 131188-1 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| 355-9001-115 | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA) |
| 3J11646 PRIMARY | Link-Belt Cranes, L.p., Lllp (USA) |
| Reference | Meaning |
|---|---|
| 355-9001-115 | 5/9 Secondary reference Parker Hannifin Corporation Div Cylinder Division |
NSN 4820-01-375-3499 is a Valve,hold,boom Hoist Cylinder, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-375-3499 has 3 manufacturer part numbers on file: 131188-1 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 355-9001-115 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division), 3J11646 (Link-Belt Cranes, L.p., Lllp).
Key specifications for 131188-1: Special Features: FOR BOOM HOIST AND TELESCOPE VALVE ASSEMBLY INLET SECTION; Valve Operation Method: PILOT. 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.
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.