The Valve,poppet,engine, cataloged under National Stock Number 2805-00-481-3530, 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 Hancox Ltd. Government technical data includes 15 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-481-3530 |
| Primary Part Number | 230710 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Hancox Ltd |
| Status | ACTIVE |
| Stem Diameter | 0.3090 INCHES NOMINAL IN |
| Head Height | 0.1562 INCHES NOMINAL IN |
| Stem Length | 4.0000 INCHES NOMINAL IN |
| Seat Angle in Deg | 45.0 |
| Chamfer Length | 0.0312 INCHES NOMINAL IN |
| Neck Radius | 0.3125 INCHES NOMINAL IN |
| Groove Diameter | 0.2670 INCHES MINIMUM AND 0.2730 INCHES MAXIMUM IN |
| Metallic Hardness Rating and Location | 34.0 ROCKWELL C NOMINAL OVERALL |
| Distance From Groove to Stem End | 0.2812 INCHES NOMINAL IN |
| Outside Diameter | 1.1200 INCHES MINIMUM AND 1.1300 INCHES MAXIMUM IN |
| Stem Style | GROOVED |
| Head Style | FLAT |
| Carbon Relief Groove | NOT INCLUDED |
| Chamfer Angle in Deg | 45.0 |
| Groove Width | 0.0950 INCHES MINIMUM AND 0.1050 INCHES MAXIMUM 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 |
|---|---|
| 230710 PRIMARY | Hancox Ltd (GBR) |
NSN 2805-00-481-3530 is a Valve,poppet,engine, manufactured by Hancox Ltd, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-481-3530 has 1 manufacturer part number on file: 230710 (Hancox Ltd).
1 possible match (shared part number, not a government interchangeability claim): 3020-00-590-9303. Verify interchangeability with system specifications before substitution.
Key specifications for 230710: Stem Diameter: 0.3090 INCHES NOMINAL IN; Head Height: 0.1562 INCHES NOMINAL IN; Stem Length: 4.0000 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.