The Seat,valve, cataloged under National Stock Number 4820-00-893-0248, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Army, United States Department of the Dba Rock Island Arsenal Jmtc. Government technical data includes 5 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-893-0248 |
| Primary Part Number | 8428158 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| Status | ACTIVE |
| Body Outside Diameter | 0.270 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 0.087 INCHES MINIMUM AND 0.091 INCHES MAXIMUM IN |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| 8428158 | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| Reference | Meaning |
|---|---|
| 101954 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-893-0248 is a Seat,valve, manufactured by Army, United States Department of the Dba Rock Island Arsenal Jmtc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-893-0248 has 1 manufacturer part number on file: 8428158 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).
1 possible match (shared part number, not a government interchangeability claim): 5325-01-260-6418. Verify interchangeability with system specifications before substitution.
Key specifications for 8428158: Overall Height: 0.025 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN; Body Outside Diameter: 0.270 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 0.087 INCHES MINIMUM AND 0.091 INCHES MAXIMUM IN. 5 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.