The Valve,poppet,engine, cataloged under National Stock Number 2805-00-353-8921, 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 Eaton Corp Dba Eaton Aerospace Jackson. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-353-8921 |
| Primary Part Number | SC1891 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Eaton Corp Dba Eaton Aerospace Jackson |
| Status | ACTIVE |
| Stem Diameter | 0.4320 INCHES NOMINAL IN |
| Head Height | 0.1720 INCHES NOMINAL IN |
| Stem Length | 6.2031 INCHES NOMINAL IN |
| Seat Angle in Deg | 45.0 |
| Chamfer Length | 0.0310 INCHES NOMINAL IN |
| Neck Radius | 0.3750 INCHES NOMINAL IN |
| Groove Diameter | 0.3750 INCHES NOMINAL IN |
| Distance From Groove to Stem End | 0.3750 INCHES NOMINAL IN |
| Outside Diameter | 1.6406 INCHES NOMINAL IN |
| Stem Style | GROOVED |
| Head Style | FLAT |
| Carbon Relief Groove | NOT INCLUDED |
| Chamfer Angle in Deg | 45.0 |
| Material | STEEL CORROSION RESISTING SEAT FACE |
| 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 |
| Part Number | Manufacturer |
|---|---|
| T427I326 | John Reiner & Co. Inc. (USA) |
| SC1891 PRIMARY | Eaton Corp Dba Eaton Aerospace Jackson (USA) |
| Reference | Meaning |
|---|---|
| T427I326 | 5/9 Secondary reference Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc |
| SC1891 | 5/9 Secondary reference Toledo Pickling & Steel Sales |
| V1782S | 5/9 Secondary reference Mcquay-Norris Inc Oem Div an Skf Industries Co |
| 1B6348 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2805-00-353-8921 is a Valve,poppet,engine, manufactured by Eaton Corp Dba Eaton Aerospace Jackson, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-353-8921 has 2 manufacturer part numbers on file: T427I326 (John Reiner & Co. Inc.), SC1891 (Eaton Corp Dba Eaton Aerospace Jackson).
Key specifications for SC1891: Stem Diameter: 0.4320 INCHES NOMINAL IN; Head Height: 0.1720 INCHES NOMINAL IN; Stem Length: 6.2031 INCHES NOMINAL IN; Seat Angle in Deg: 45.0. 15 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.