The Insert,engine Valve Seat, cataloged under National Stock Number 2805-00-078-7877, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-078-7877 |
| Item Name | Insert,engine Valve Seat |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Status | ACTIVE |
| Body Outside Diameter | 1.253 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 1.000 INCHES NOMINAL IN |
| Material | COBALT ALLOY 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 |
| Reference | Meaning |
|---|---|
| CFN70264 | 3/9 Design control — primary reference U.S. Government activity |
NSN 2805-00-078-7877 is a Insert,engine Valve Seat, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
Key specifications for 2805-00-078-7877: Overall Height: 0.219 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN; Body Outside Diameter: 1.253 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 1.000 INCHES NOMINAL 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.