The Valve,linear,directional Control, cataloged under National Stock Number 4820-00-557-7905, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-557-7905 |
| Primary Part Number | 6839785 |
| Item Name | Valve,linear,directional Control |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, 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 |
|---|---|
| 6839785 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| Reference | Meaning |
|---|---|
| 2AX155 | C/1 Advisory reference — outside the item-of-supply concept Oshkosh Corp |
| 6837992 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
| 6836447 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 4820-00-557-7905 is a Valve,linear,directional Control, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-557-7905 has 1 manufacturer part number on file: 6839785 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 6839785: Special Features: STEEL;12.000 IN.H;11.000 IN.L;3.250 IN.THK;MEDIA HYDRAULIC OILS SUBPLATE MTD;18 0.312 IN.DIA MTG HOLES IN RANDOM PATTERN;1 LEVER OPERATED SPOOL;3 HYDRAULIC PRESSURE OPERATED SPOOLS IN. 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.