The Seat,valve, cataloged under National Stock Number 4820-00-375-8374, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 6 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-375-8374 |
| Primary Part Number | 4700-3112615PC548351 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Body Outside Diameter | 0.433 INCHES NOMINAL IN |
| Thread Length | 0.595 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Nominal Thread Size | 0.190 INCHES SINGLE THREADED PORTION IN |
| Thread Class | 2B SINGLE THREADED PORTION |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE THREADED PORTION |
| 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 |
|---|---|
| 4700-3112615PC548351 PRIMARY | Naval Sea Systems Command (USA) |
| 821143REVAPCALL PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 4700-3112615PC548351 | 5/9 Secondary reference U.S. Government activity |
| 548351 | C/1 Advisory reference — outside the item-of-supply concept Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| 548351 | 5/9 Secondary reference Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div |
| 821143REVAPCALL | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-375-8374 is a Seat,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-375-8374 has 2 manufacturer part numbers on file: 4700-3112615PC548351 (Naval Sea Systems Command), 821143REVAPCALL (Naval Sea Systems Command).
Key specifications for 4700-3112615PC548351: Body Outside Diameter: 0.433 INCHES NOMINAL IN; Thread Length: 0.595 INCHES NOMINAL SINGLE THREADED PORTION IN; Nominal Thread Size: 0.190 INCHES SINGLE THREADED PORTION IN; Thread Class: 2B SINGLE THREADED PORTION. 6 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.