The Valve,poppet,engine, cataloged under National Stock Number 2805-00-357-5773, 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 19 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 | 2805-00-357-5773 |
| Primary Part Number | 11681708 |
| 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 | 0.3090 INCHES MINIMUM AND 0.3095 INCHES MAXIMUM IN |
| Head Height | 0.1600 INCHES NOMINAL IN |
| Stem Length | 4.2350 INCHES MINIMUM AND 4.2430 INCHES MAXIMUM IN |
| Seat Angle in Deg | 45.0 |
| Chamfer Length | 0.0300 INCHES NOMINAL IN |
| Neck Radius | 0.3200 INCHES NOMINAL IN |
| Minor Outside Diameter | 0.1960 INCHES MINIMUM AND 0.2000 INCHES MAXIMUM IN |
| Metallic Hardness Rating and Location | 30.0 ROCKWELL C NOMINAL HEAD |
| Metallic Hardness Rating and Location | 30.0 ROCKWELL C NOMINAL SEAT FACE |
| Metallic Hardness Rating and Location | 30.0 ROCKWELL C NOMINAL STEM |
| Metallic Hardness Rating and Location | 50.0 ROCKWELL C NOMINAL TIP |
| Outside Diameter | 1.3270 INCHES MINIMUM AND 1.3370 INCHES MAXIMUM IN |
| Stem Style | TAPERED |
| Taper Angle in Deg | 15.0 |
| Head Style | FLAT |
| Distance From Minor Diameter to Stem End | 0.1740 INCHES MINIMUM AND 0.1760 INCHES MAXIMUM IN |
| Carbon Relief Groove | NOT INCLUDED |
| Minor Diameter Length | 0.0940 INCHES NOMINAL IN |
| Chamfer Angle in Deg | 45.0 |
| 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 |
|---|---|
| 11681708 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 2805-00-357-5773 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 2805-00-357-5773 has 1 manufacturer part number on file: 11681708 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11681708: Stem Diameter: 0.3090 INCHES MINIMUM AND 0.3095 INCHES MAXIMUM IN; Head Height: 0.1600 INCHES NOMINAL IN; Stem Length: 4.2350 INCHES MINIMUM AND 4.2430 INCHES MAXIMUM IN; Seat Angle in Deg: 45.0. 19 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.