The Valve,poppet,engine, cataloged under National Stock Number 2805-01-007-0790, 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 20 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2805-01-007-0790 |
| Primary Part Number | S2902-5 |
| 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 | 0.3750 INCHES NOMINAL IN |
| Head Height | 0.1410 INCHES NOMINAL IN |
| Second Groove Width | 0.0780 INCHES NOMINAL IN |
| Stem Length | 4.8750 INCHES NOMINAL IN |
| Seat Angle in Deg | 30.0 |
| Chamfer Length | 0.0310 INCHES NOMINAL IN |
| Neck Radius | 0.1880 INCHES NOMINAL IN |
| Minor Outside Diameter | 0.3680 INCHES NOMINAL IN |
| Outside Diameter | 1.5000 INCHES NOMINAL IN |
| Distance From First Groove to Stem End | 0.3750 INCHES NOMINAL IN |
| Stem Style | DOUBLE GROOVED |
| First Groove Diameter | 0.3080 INCHES NOMINAL IN |
| Head Style | FLAT |
| Distance From Second Groove to Stem End | 0.5310 INCHES NOMINAL IN |
| Carbon Relief Groove | NOT INCLUDED |
| Minor Diameter Length | 0.6880 INCHES NOMINAL IN |
| Chamfer Angle in Deg | 30.0 |
| Second Groove Diameter | 0.3080 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| First Groove Width | 0.0780 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 |
|---|---|
| S2902-5 | Trw Inc Trw Intl Trade Government Sales Dept (USA) |
| Reference | Meaning |
|---|---|
| 3769227 | 5/9 Secondary reference Chrysler Realty Company Llc Dba Daimler Chrysler |
| 3769227 | 3/2 Design control — primary reference U.S. Government activity |
| 3769227-0050S | 5/9 Secondary reference Chrysler Realty Company Llc Dba Daimler Chrysler |
| V-2029K-005 | 5/9 Secondary reference Bosch Automotive Service Solutions Inc. |
| V-2029K-005 | 5/9 Secondary reference Spx Corp |
NSN 2805-01-007-0790 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 2805-01-007-0790 has 1 manufacturer part number on file: S2902-5 (Trw Inc Trw Intl Trade Government Sales Dept).
Key specifications for S2902-5: Stem Diameter: 0.3750 INCHES NOMINAL IN; Head Height: 0.1410 INCHES NOMINAL IN; Second Groove Width: 0.0780 INCHES NOMINAL IN; Stem Length: 4.8750 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.