The Rotor,engine Poppet Valve, cataloged under National Stock Number 2805-00-871-2745, 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 Clinton Engines Corp. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-871-2745 |
| Primary Part Number | 291-0020-50 |
| Item Name | Rotor,engine Poppet Valve |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Clinton Engines Corp |
| Status | ACTIVE |
| First Step Diameter | 0.756 INCHES NOMINAL IN |
| Starting Load Range | +17.0 TO 35.0 POUNDS LBS |
| Second Step Length | 0.248 INCHES NOMINAL IN |
| Style Designator | POSITIVE TYPE-TAPERED BORE |
| Rotation Direction | COUNTERCLOCKWISE |
| Second Step Diameter | 1.070 INCHES NOMINAL IN |
| First Step Length | 0.062 INCHES NOMINAL IN |
| Bore Diameter | 0.456 INCHES NOMINAL IN |
| Tapered Bore Included Angle in Deg | 15 DEG,30 MIN |
| 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 |
|---|---|
| 291-0020-50 PRIMARY | Clinton Engines Corp (USA) |
| 291-0020-500 PRIMARY | Clinton Engines Corp (USA) |
| Reference | Meaning |
|---|---|
| JHP99-78 | 5/9 Secondary reference Hollingsworth John R Co |
NSN 2805-00-871-2745 is a Rotor,engine Poppet Valve, manufactured by Clinton Engines Corp, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-871-2745 has 2 manufacturer part numbers on file: 291-0020-50 (Clinton Engines Corp), 291-0020-500 (Clinton Engines Corp).
Key specifications for 291-0020-50: Overall Height: 0.430 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN; First Step Diameter: 0.756 INCHES NOMINAL IN; Starting Load Range: +17.0 TO 35.0 POUNDS LBS; Second Step Length: 0.248 INCHES NOMINAL IN. 9 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.