The Valve Assembly,pressure, cataloged under National Stock Number 4820-00-762-1541, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Oshkosh Defense Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-762-1541 |
| Primary Part Number | 1TD399 |
| Item Name | Valve Assembly,pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL; SUBPLATE MTD; W/TWO INTERNALLY THD PORTS 1.250 IN.-12 UNF THD SIZE AND 1 INTERNALLY THD BOSS PORT 1.250 IN.-12 UNF THD SIZE; 7.000 IN. O/A LG,4.375 IN. O/A W AND 3.250 IN. O/A H;W/SIX 0.410 IN. DIA MTG HOLES 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 |
|---|---|
| 1TD399 | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 1TD399 | 5/9 Secondary reference Oshkosh Corp |
| X206819F | 3/9 Design control — primary reference Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
NSN 4820-00-762-1541 is a Valve Assembly,pressure, manufactured by Oshkosh Defense Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-762-1541 has 1 manufacturer part number on file: 1TD399 (Oshkosh Defense Llc).
Key specifications for 1TD399: General Characteristics Item Description: STEEL; SUBPLATE MTD; W/TWO INTERNALLY THD PORTS 1.250 IN.-12 UNF THD SIZE AND 1 INTERNALLY THD BOSS PORT 1.250 IN.-12 UNF THD SIZE; 7.000 IN. O/A LG,4.375 IN. O/A W AND 3.250 IN. O/A H;W/SIX 0.410 IN. DIA MTG HOLES 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.