The Valve,poppet,engine, cataloged under National Stock Number 2805-00-444-1778, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Atwood Fence Co Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-444-1778 |
| Primary Part Number | 2121580 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2805 / 28 — No Item Name Available |
| Manufacturer | Atwood Fence Co Inc |
| Status | ACTIVE |
| First Groove Width | 0.3500 INCHES NOMINAL IN |
| Second Groove Diameter | 0.1250 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Stem Style | DOUBLE GROOVED |
| Stem Length | 3.6812 INCHES NOMINAL IN |
| First Groove Diameter | 0.1250 INCHES NOMINAL IN |
| Chamfer Angle in Deg | 45.0 |
| Distance From Second Groove to Stem End | 0.8598 INCHES NOMINAL IN |
| Carbon Relief Groove | NOT INCLUDED |
| Chamfer Length | 0.0620 INCHES NOMINAL IN |
| Outside Diameter | 1.6150 INCHES MINIMUM AND 1.6750 INCHES MAXIMUM IN |
| Head Style | FLAT |
| Second Groove Width | 0.3500 INCHES NOMINAL IN |
| Head Height | 0.0790 INCHES NOMINAL IN |
| Neck Radius | 0.2500 INCHES NOMINAL IN |
| Stem Diameter | 0.3700 INCHES MINIMUM AND 0.3730 INCHES MAXIMUM IN |
| Distance From First Groove to Stem End | 0.7026 INCHES NOMINAL IN |
| Seat Angle in Deg | 45.0 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 2805-00-444-1778 is a Valve,poppet,engine, manufactured by Atwood Fence Co Inc, classified under FSC 2805 (No Item Name Available). Status: active.
NSN 2805-00-444-1778 has 3 cross-referenced part numbers: 2121580 (Atwood Fence Co Inc), 2121580 (Chrysler Realty Company Llc Dba Daimler Chrysler), 1947623 (Atwood Fence Co Inc).
There is 1 known substitute for 2805-00-444-1778: 2805-00-860-9887. Verify interchangeability with system specifications before substitution.
Key specifications for 2121580: First Groove Width: 0.3500 INCHES NOMINAL IN; Second Groove Diameter: 0.1250 INCHES NOMINAL IN; Material: STEEL OVERALL; Stem Style: DOUBLE GROOVED. 18 total characteristics are documented in the Federal Logistics Information System.