The Valve,poppet,engine, cataloged under National Stock Number 2805-00-890-9946, 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 21 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-890-9946 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Status | ACTIVE |
| Stem Diameter | 0.4145 INCHES NOMINAL IN |
| Head Height | 0.1920 INCHES NOMINAL IN |
| Second Groove Width | 0.0781 INCHES NOMINAL IN |
| Stem Length | 5.2810 INCHES NOMINAL IN |
| Seat Angle in Deg | 40.0 |
| Chamfer Length | 0.0156 INCHES NOMINAL IN |
| Neck Radius | 0.4062 INCHES NOMINAL IN |
| Third Groove Diameter | 0.0156 INCHES NOMINAL IN |
| Minor Outside Diameter | 0.3710 INCHES NOMINAL IN |
| Outside Diameter | 1.7343 INCHES NOMINAL IN |
| Distance From First Groove to Stem End | 0.5469 INCHES NOMINAL IN |
| Stem Style | DOUBLE GROOVED |
| First Groove Diameter | 0.3260 INCHES NOMINAL IN |
| Head Style | CONCAVE |
| Distance From Second Groove to Stem End | 0.7500 INCHES NOMINAL IN |
| Carbon Relief Groove | NOT INCLUDED |
| Minor Diameter Length | 1.0000 INCHES NOMINAL IN |
| Chamfer Angle in Deg | 45.0 |
| Second Groove Diameter | 0.3260 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| First Groove Width | 0.1250 INCHES NOMINAL IN |
| 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 |
|---|---|
| 874918R2 | 5/9 Secondary reference U.S. Government activity |
| 2033S | 5/9 Secondary reference Napasco International Inc |
| 874918R2 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
| D-2033S | 3/2 Design control — primary reference U.S. Government activity |
| AS2666 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2805-00-890-9946 is a Valve,poppet,engine, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
Key specifications for 2805-00-890-9946: Stem Diameter: 0.4145 INCHES NOMINAL IN; Head Height: 0.1920 INCHES NOMINAL IN; Second Groove Width: 0.0781 INCHES NOMINAL IN; Stem Length: 5.2810 INCHES NOMINAL IN. 21 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.