The Valve,poppet,engine, cataloged under National Stock Number 2805-00-333-6253, 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 19 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2805-00-333-6253 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Status | ACTIVE |
| Stem Diameter | 0.4880 INCHES MINIMUM AND 0.4930 INCHES MAXIMUM IN |
| FSC Application Data | GASOLINE ENGINE |
| Head Height | 0.2740 INCHES MINIMUM AND 0.2840 INCHES MAXIMUM IN |
| Second Groove Width | 0.0350 INCHES MINIMUM AND 0.0400 INCHES MAXIMUM IN |
| Stem Length | 7.0795 INCHES MINIMUM AND 7.0945 INCHES MAXIMUM IN |
| Seat Angle in Deg | 46.0 |
| Chamfer Length | 0.0060 INCHES NOMINAL IN |
| Neck Radius | 0.3750 INCHES NOMINAL IN |
| Metallic Hardness Rating and Location | 54.0 ROCKWELL C MINIMUM TIP |
| Outside Diameter | 2.1360 INCHES MINIMUM AND 2.1460 INCHES MAXIMUM IN |
| Distance From First Groove to Stem End | 0.4380 INCHES MINIMUM AND 0.4680 INCHES MAXIMUM IN |
| Stem Style | DOUBLE GROOVED |
| First Groove Diameter | 0.4220 INCHES MINIMUM AND 0.4280 INCHES MAXIMUM IN |
| Head Style | MUSHROOM |
| Distance From Second Groove to Stem End | 0.6370 INCHES MINIMUM AND 0.7860 INCHES MAXIMUM IN |
| Carbon Relief Groove | NOT INCLUDED |
| Chamfer Angle in Deg | 30.0 |
| Second Groove Diameter | 0.4550 INCHES MINIMUM AND 0.4600 INCHES MAXIMUM IN |
| First Groove Width | 0.0500 INCHES MINIMUM AND 0.0625 INCHES MAXIMUM 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 |
|---|---|
| S749I309 | 3/9 Design control — primary reference Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc |
NSN 2805-00-333-6253 is a Valve,poppet,engine, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
Key specifications for 2805-00-333-6253: Stem Diameter: 0.4880 INCHES MINIMUM AND 0.4930 INCHES MAXIMUM IN; FSC Application Data: GASOLINE ENGINE; Head Height: 0.2740 INCHES MINIMUM AND 0.2840 INCHES MAXIMUM IN; Second Groove Width: 0.0350 INCHES MINIMUM AND 0.0400 INCHES MAXIMUM IN. 19 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.