The Valve,poppet,engine, cataloged under National Stock Number 2805-00-140-3907, 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 Briggs and Stratton Corp. Government technical data includes 16 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. 2 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 | 2805-00-140-3907 |
| Primary Part Number | 261055 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Briggs and Stratton Corp |
| Status | ACTIVE |
| Stem Diameter | 0.3125 INCHES NOMINAL IN |
| Head Height | 0.1150 INCHES NOMINAL IN |
| Stem Length | 4.2813 INCHES NOMINAL IN |
| Seat Angle in Deg | 30.0 |
| Chamfer Length | 0.0625 INCHES NOMINAL IN |
| Neck Radius | 0.2500 INCHES NOMINAL IN |
| Minor Outside Diameter | 0.2120 INCHES NOMINAL IN |
| Outside Diameter | 1.2500 INCHES NOMINAL IN |
| Stem Style | TAPERED |
| Taper Angle in Deg | 30.0 |
| Head Style | FLAT |
| Distance From Minor Diameter to Stem End | 0.4040 INCHES NOMINAL IN |
| Carbon Relief Groove | NOT INCLUDED |
| Minor Diameter Length | 0.1875 INCHES NOMINAL IN |
| Chamfer Angle in Deg | 30.0 |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 2805-00-140-3907 is a Valve,poppet,engine, manufactured by Briggs and Stratton Corp, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-140-3907 has 2 manufacturer part numbers on file: 261055 (Briggs and Stratton Corp), 261055 (Briggs & Stratton Uk Ltd).
2 possible matches (shared part number, not a government interchangeability claim): 5905-01-027-5491, 5980-01-227-4218. Verify interchangeability with system specifications before substitution.
Key specifications for 261055: Stem Diameter: 0.3125 INCHES NOMINAL IN; Head Height: 0.1150 INCHES NOMINAL IN; Stem Length: 4.2813 INCHES NOMINAL IN; Seat Angle in Deg: 30.0. 16 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.