The Valve,poppet,engine, cataloged under National Stock Number 2805-01-075-5072, 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 Trw Inc Trw Intl Trade Government Sales Dept. Government technical data includes 13 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-01-075-5072 |
| Primary Part Number | AS2820 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Trw Inc Trw Intl Trade Government Sales Dept |
| Status | ACTIVE |
| Stem Diameter | 0.3420 INCHES NOMINAL IN |
| Head Height | 0.2000 INCHES NOMINAL IN |
| Stem Length | 4.6300 INCHES NOMINAL IN |
| Seat Angle in Deg | 45.0 |
| Neck Radius | 0.3750 INCHES NOMINAL IN |
| Groove Diameter | 0.3010 INCHES NOMINAL IN |
| Distance From Groove to Stem End | 0.2500 INCHES NOMINAL IN |
| Outside Diameter | 1.5590 INCHES NOMINAL IN |
| Stem Style | GROOVED |
| Head Style | FLAT |
| Carbon Relief Groove | NOT INCLUDED |
| Material | STEEL OVERALL |
| Groove Width | 0.1050 INCHES NOMINAL 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 |
|---|---|
| AS2820 PRIMARY | Trw Inc Trw Intl Trade Government Sales Dept (USA) |
| Reference | Meaning |
|---|---|
| D5TZ-6505-N | 5/9 Secondary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
| D0TZ-6505-A | 5/9 Secondary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
| V-1937X | 5/9 Secondary reference Spx Corp |
| AX-1633 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2805-01-075-5072 is a Valve,poppet,engine, manufactured by Trw Inc Trw Intl Trade Government Sales Dept, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-01-075-5072 has 1 manufacturer part number on file: AS2820 (Trw Inc Trw Intl Trade Government Sales Dept).
Key specifications for AS2820: Stem Diameter: 0.3420 INCHES NOMINAL IN; Head Height: 0.2000 INCHES NOMINAL IN; Stem Length: 4.6300 INCHES NOMINAL IN; Seat Angle in Deg: 45.0. 13 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.