The Seat,valve, cataloged under National Stock Number 4820-01-207-3680, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-207-3680 |
| Primary Part Number | 2CR878 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Body Outside Diameter | 2.000 INCHES NOMINAL 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 |
|---|---|
| 2CR878 | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 45A391 P3 PC 22 | 5/9 Secondary reference C Systems Llc Dba Craig Systems Dba Eastern Technologies |
| 45A391-P38 | 3/9 Design control — primary reference C Systems Llc Dba Craig Systems Dba Eastern Technologies |
| 45A391 P3 | D/9 Drawing number reference only C Systems Llc Dba Craig Systems Dba Eastern Technologies |
| 2CR878 | 5/9 Secondary reference Oshkosh Corp |
NSN 4820-01-207-3680 is a Seat,valve, manufactured by Oshkosh Defense Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-207-3680 has 1 manufacturer part number on file: 2CR878 (Oshkosh Defense Llc).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-207-5967, 4820-01-207-9267, 4730-01-208-1383. Verify interchangeability with system specifications before substitution.
Key specifications for 2CR878: Body Outside Diameter: 2.000 INCHES NOMINAL IN; End Item Identification: HEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS). 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.