The Seat,valve, cataloged under National Stock Number 4820-00-431-6345, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Cnh Industrial America Llc Dba Cnh America. Government technical data includes 4 specifications, 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. 2 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 | 4820-00-431-6345 |
| Primary Part Number | A42259 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Cnh Industrial America Llc Dba Cnh America |
| Status | ACTIVE |
| Body Outside Diameter | 2.125 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 0.812 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-00-431-6345 is a Seat,valve, manufactured by Cnh Industrial America Llc Dba Cnh America, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-431-6345 has 2 manufacturer part numbers on file: A42259 (Cnh Industrial America Llc Dba Cnh America), B-21071 (Cnh Industrial America Llc Dba Cnh America).
2 possible matches (shared part number, not a government interchangeability claim): 5970-01-176-0130, 4820-01-325-4752. Verify interchangeability with system specifications before substitution.
Key specifications for A42259: Overall Height: 0.312 INCHES NOMINAL IN; Body Outside Diameter: 2.125 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 0.812 INCHES NOMINAL IN. 4 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.