The Valve,poppet,engine, cataloged under National Stock Number 2805-01-121-1526, 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 20 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-01-121-1526 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Status | ACTIVE |
| Head Height | 0.1562 INCHES NOMINAL IN |
| Second Groove Width | 0.0625 INCHES NOMINAL IN |
| Seat Angle in Deg | 45.0 |
| Chamfer Length | 0.0312 INCHES NOMINAL IN |
| Neck Radius | 0.3437 INCHES NOMINAL IN |
| Third Groove Diameter | 0.3125 INCHES NOMINAL IN |
| Outside Diameter | 1.4062 INCHES NOMINAL IN |
| Stem Style | MULTI-GROOVED |
| First Groove Diameter | 0.3125 INCHES NOMINAL IN |
| Head Style | FLAT |
| Distance From Second Groove to Stem End | 0.2656 INCHES NOMINAL IN |
| Carbon Relief Groove | NOT INCLUDED |
| Third Groove Width | 0.0625 INCHES NOMINAL IN |
| Chamfer Angle in Deg | 45.0 |
| Second Groove Diameter | 0.3125 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING HEAD |
| Material | STEEL TIP |
| Material | STEEL CORROSION RESISTING STEM |
| Distance From Third Groove to Stem End | 0.3750 INCHES NOMINAL IN |
| First Groove Width | 0.0625 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 |
|---|---|
| J3224597 | 3/2 Design control — primary reference U.S. Government activity |
| 3224597 | 5/9 Secondary reference U.S. Government activity |
| A-1805 | 3/2 Design control — primary reference U.S. Government activity |
| 3224597 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 3224597 | 5/9 Secondary reference Kenosha Automotive Plant Sub of American Motors Corp |
NSN 2805-01-121-1526 is a Valve,poppet,engine, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
5 possible matches (shared part number, not a government interchangeability claim): 8455-01-528-9626, 4710-01-579-9012, 8455-01-660-6693. Verify interchangeability with system specifications before substitution.
Key specifications for 2805-01-121-1526: Head Height: 0.1562 INCHES NOMINAL IN; Second Groove Width: 0.0625 INCHES NOMINAL IN; Seat Angle in Deg: 45.0; Chamfer Length: 0.0312 INCHES NOMINAL IN. 20 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.