The Valve,lockup Cutoff, cataloged under National Stock Number 4820-01-083-6785, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The W.w. Williams Company, Llc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-083-6785 |
| Primary Part Number | 6834407 |
| Item Name | Valve,lockup Cutoff |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The W.w. Williams Company, Llc |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,CYLINDRICAL SHAPE,0.873 IN. LARGEST OD,1.301 IN. O/A LG IN |
| 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 |
|---|---|
| 2AX520 | Oshkosh Defense Llc (USA) |
| 6834407 PRIMARY | The W.w. Williams Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 2AX520 | 5/9 Secondary reference Oshkosh Corp |
| 6834407 | 3/9 Design control — primary reference Allison Transmission Inc Dba Allison Transmission, Inc |
| 6834407 | 5/9 Secondary reference Detroit Diesel (overseas Distribution Corp) |
NSN 4820-01-083-6785 is a Valve,lockup Cutoff, manufactured by The W.w. Williams Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-083-6785 has 2 manufacturer part numbers on file: 2AX520 (Oshkosh Defense Llc), 6834407 (The W.w. Williams Company, Llc).
Key specifications for 6834407: General Characteristics Item Description: STEEL,CYLINDRICAL SHAPE,0.873 IN. LARGEST OD,1.301 IN. O/A LG IN. 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.