The Valve,rotary,selector, cataloged under National Stock Number 4820-01-556-7935, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Benson Packing Inc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-556-7935 |
| Primary Part Number | QS-CBS-00-4000 |
| Item Name | Valve,rotary,selector |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Benson Packing Inc |
| 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 |
|---|---|
| QS-CBS-00-4000 PRIMARY | Benson Packing Inc (USA) |
| Reference | Meaning |
|---|---|
| QS-CBS-00-3250 | 5/9 Secondary reference Delta Power Company Dba Delta Power |
| 12423747 | 7/2 Vendor item drawing reference U S Army Tank Automotive Command Amsta-Im-Mm |
| QS-CBS-00-3250-X | 5/9 Secondary reference Delta Power Company Dba Delta Power |
NSN 4820-01-556-7935 is a Valve,rotary,selector, manufactured by Benson Packing Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-556-7935 has 1 manufacturer part number on file: QS-CBS-00-4000 (Benson Packing Inc).
Key specifications for QS-CBS-00-4000: Special Features: M20 X 1.5 H6 COUNTER BALANCE VALVE; End Item Identification: 2320-01-354-4528 TRUCK,WRECKER. 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.