The Valve,poppet,engine, cataloged under National Stock Number 2805-00-846-9488, 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 Trw Inc Trw Intl Trade Government Sales Dept. 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-846-9488 |
| Primary Part Number | S-2431+3 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Trw Inc Trw Intl Trade Government Sales Dept |
| Status | ACTIVE |
| Stem Diameter | 0.3438 INCHES NOMINAL IN |
| Head Height | 0.1719 INCHES NOMINAL IN |
| Stem Length | 4.9375 INCHES NOMINAL IN |
| Seat Angle in Deg | 45.0 |
| Chamfer Length | 0.0312 INCHES NOMINAL IN |
| Neck Radius | 0.2812 INCHES NOMINAL IN |
| Groove Diameter | 0.2812 INCHES NOMINAL IN |
| Distance From Groove to Stem End | 0.2188 INCHES NOMINAL IN |
| Outside Diameter | 1.5000 INCHES NOMINAL IN |
| Stem Style | GROOVED |
| Head Style | FLAT |
| Carbon Relief Groove | NOT INCLUDED |
| Chamfer Angle in Deg | 30.0 |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| S2054-3 | Trw Inc Trw Intl Trade Government Sales Dept (USA) |
| S-2431+3 PRIMARY | Trw Inc Trw Intl Trade Government Sales Dept (USA) |
| Reference | Meaning |
|---|---|
| 1885.003 | 5/9 Secondary reference Napasco International Inc |
| C3AZ6505B | 5/9 Secondary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
| D-1885+3 | 3/2 Design control — primary reference U.S. Government activity |
| C3AZ6505P | 5/9 Secondary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
| C3AZ6505B | C/1 Advisory reference — outside the item-of-supply concept Ford Motor Company |
NSN 2805-00-846-9488 is a Valve,poppet,engine, manufactured by Trw Inc Trw Intl Trade Government Sales Dept, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-846-9488 has 2 manufacturer part numbers on file: S2054-3 (Trw Inc Trw Intl Trade Government Sales Dept), S-2431+3 (Trw Inc Trw Intl Trade Government Sales Dept).
Key specifications for S-2431+3: Stem Diameter: 0.3438 INCHES NOMINAL IN; Head Height: 0.1719 INCHES NOMINAL IN; Stem Length: 4.9375 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.