The Valve,poppet,engine, cataloged under National Stock Number 2805-00-570-3040, 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 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2805-00-570-3040 |
| Primary Part Number | 10941184 |
| 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 | 0.3405 INCHES MINIMUM AND 0.3415 INCHES MAXIMUM IN |
| Head Height | 0.1350 INCHES MINIMUM AND 0.1450 INCHES MAXIMUM IN |
| Stem Length | 4.3700 INCHES MINIMUM AND 4.3850 INCHES MAXIMUM IN |
| Seat Angle in Deg | 45.0 |
| Seat Angle in Deg | 45.2 |
| Chamfer Length | 0.0300 INCHES NOMINAL IN |
| Neck Radius | 0.3100 INCHES NOMINAL IN |
| Groove Diameter | 0.2980 INCHES MINIMUM AND 0.3040 INCHES MAXIMUM IN |
| Metallic Hardness Rating and Location | 45.0 ROCKWELL C MAXIMUM STEM |
| Metallic Hardness Rating and Location | 28.0 ROCKWELL C MINIMUM STEM |
| Metallic Hardness Rating and Location | 45.0 ROCKWELL C NOMINAL TIP |
| Distance From Groove to Stem End | 0.2390 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 Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 2805-00-570-3040 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 2805-00-570-3040 has 2 manufacturer part numbers on file: 10941184 (U S Army Tank Automotive Command Amsta-Im-Mm), 377632C (Brinkley Technology Group Llc Dba Hercules Manufacturing).
Key specifications for 10941184: Stem Diameter: 0.3405 INCHES MINIMUM AND 0.3415 INCHES MAXIMUM IN; Head Height: 0.1350 INCHES MINIMUM AND 0.1450 INCHES MAXIMUM IN; Stem Length: 4.3700 INCHES MINIMUM AND 4.3850 INCHES MAXIMUM IN; Seat Angle in Deg: 45.0. 18 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.
NSN 2805-00-570-3040 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.