The Insert,engine Valve Seat, cataloged under National Stock Number 2805-01-183-8231, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Trw Inc Trw Intl Trade Government Sales Dept. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-01-183-8231 |
| Primary Part Number | K0504 |
| Item Name | Insert,engine Valve Seat |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Trw Inc Trw Intl Trade Government Sales Dept |
| Status | ACTIVE |
| Body Outside Diameter | 1.668 INCHES NOMINAL IN |
| Taper Minor Diameter | 1.370 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Taper Major Diameter | 1.444 INCHES NOMINAL IN |
| Body Inside Diameter | 1.383 INCHES NOMINAL IN |
| Taper Length | 0.263 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Seat Angle in Deg | 45.000 NOMINAL |
| 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 |
|---|---|
| K0504 | Trw Inc Trw Intl Trade Government Sales Dept (USA) |
| Reference | Meaning |
|---|---|
| 5203472 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2805-01-183-8231 is a Insert,engine Valve Seat, manufactured by Trw Inc Trw Intl Trade Government Sales Dept, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-01-183-8231 has 1 manufacturer part number on file: K0504 (Trw Inc Trw Intl Trade Government Sales Dept).
Key specifications for K0504: Overall Height: 0.292 INCHES NOMINAL IN; Body Outside Diameter: 1.668 INCHES NOMINAL IN; Taper Minor Diameter: 1.370 INCHES NOMINAL IN; Style Designator: PLAIN. 9 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.