The Seat,valve, cataloged under National Stock Number 4820-01-188-3595, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tate Andale, Llc. Government technical data includes 10 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-188-3595 |
| Primary Part Number | 2280-402 PC 13 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Tate Andale, Llc |
| Status | ACTIVE |
| Thread Length | 0.875 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Style Designator | PLAIN THREADED |
| Body Inside Diameter | 5.000 INCHES NOMINAL IN |
| Nominal Thread Size | 6.000 INCHES SINGLE THREADED PORTION IN |
| Thread Class | 3A SINGLE THREADED PORTION A |
| Thread Quantity Per Inch | 12 SINGLE THREADED PORTION |
| Material | NICKEL ALLOY OVERALL |
| Seat Angle in Deg | 45.000 NOMINAL |
| Thread Series Designator | UN SINGLE THREADED PORTION |
| Seating Surface Shape | ANGULAR |
| 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 |
|---|---|
| 2280-402 PC 13 PRIMARY | Tate Andale, Llc (USA) |
| Reference | Meaning |
|---|---|
| 508-4325934 | D/9 Drawing number reference only U.S. Government activity |
| 2280-402 PC 13 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 508-4325934 PC 13 | 5/2 Secondary reference U.S. Government activity |
| 2280-402 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4820-01-188-3595 is a Seat,valve, manufactured by Tate Andale, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-188-3595 has 1 manufacturer part number on file: 2280-402 PC 13 (Tate Andale, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-188-3892. Verify interchangeability with system specifications before substitution.
Key specifications for 2280-402 PC 13: Overall Height: 0.875 INCHES NOMINAL IN; Thread Length: 0.875 INCHES NOMINAL SINGLE THREADED PORTION IN; Style Designator: PLAIN THREADED; Body Inside Diameter: 5.000 INCHES NOMINAL IN. 10 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.