The Valve,poppet,engine, cataloged under National Stock Number 2805-00-678-1831, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 17 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-678-1831 |
| Primary Part Number | 7345259 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Stem Diameter | 0.3150 INCHES MINIMUM AND 0.3155 INCHES MAXIMUM IN |
| Head Height | 0.1600 INCHES NOMINAL IN |
| Stem Length | 4.3150 INCHES MINIMUM AND 4.3250 INCHES MAXIMUM IN |
| Seat Angle in Deg | 45.0 |
| Chamfer Length | 0.0150 INCHES NOMINAL IN |
| Neck Radius | 0.3800 INCHES NOMINAL IN |
| Groove Diameter | 0.2680 INCHES MINIMUM AND 0.2720 INCHES MAXIMUM IN |
| Metallic Hardness Rating and Location | 50.0 ROCKWELL C MINIMUM TIP |
| Metallic Hardness Rating and Location | 20.0 ROCKWELL C MINIMUM STEM |
| Metallic Hardness Rating and Location | 50.0 ROCKWELL C MINIMUM SEAT FACE |
| Distance From Groove to Stem End | 0.1830 INCHES MINIMUM AND 0.1930 INCHES MAXIMUM IN |
| Outside Diameter | 1.7280 INCHES MINIMUM AND 1.7380 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 |
|---|---|
| 7345259 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 2805-00-678-1831 is a Valve,poppet,engine, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-678-1831 has 1 manufacturer part number on file: 7345259 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7345259: Stem Diameter: 0.3150 INCHES MINIMUM AND 0.3155 INCHES MAXIMUM IN; Head Height: 0.1600 INCHES NOMINAL IN; Stem Length: 4.3150 INCHES MINIMUM AND 4.3250 INCHES MAXIMUM IN; Seat Angle in Deg: 45.0. 17 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.