The Valve,poppet,engine, cataloged under National Stock Number 2810-00-640-8352, is classified within Federal Supply Class 2810 (Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Curtiss-Wright Controls, Inc. Div Actuation Division. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2810-00-640-8352 |
| Primary Part Number | 145902 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2810 / 28 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components |
| Manufacturer | Curtiss-Wright Controls, Inc. Div Actuation Division |
| Status | ACTIVE |
| Stem Diameter | 0.7455 INCHES MINIMUM AND 0.7460 INCHES MAXIMUM IN |
| Head Height | 0.6250 INCHES NOMINAL IN |
| Stem Length | 5.2540 INCHES MINIMUM AND 5.2640 INCHES MAXIMUM IN |
| Seat Angle in Deg | 45.0 |
| Neck Radius | 0.7500 INCHES NOMINAL IN |
| Groove Diameter | 0.6340 INCHES MINIMUM AND 0.6360 INCHES MAXIMUM IN |
| Metallic Hardness Rating and Location | 54.0 ROCKWELL C NOMINAL TIP |
| Distance From Groove to Stem End | 0.2250 INCHES NOMINAL IN |
| Outside Diameter | 3.3000 INCHES NOMINAL IN |
| Stem Style | GROOVED |
| Head Style | MUSHROOM |
| Carbon Relief Groove | NOT INCLUDED |
| Groove Width | 0.2840 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 |
|---|---|
| 145902 PRIMARY | Curtiss-Wright Controls, Inc. Div Actuation Division (USA) |
| Reference | Meaning |
|---|---|
| ASW145902 | 5/9 Secondary reference Aircraft Supplies |
NSN 2810-00-640-8352 is a Valve,poppet,engine, manufactured by Curtiss-Wright Controls, Inc. Div Actuation Division, classified under FSC 2810, Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components. Status: active.
NSN 2810-00-640-8352 has 1 manufacturer part number on file: 145902 (Curtiss-Wright Controls, Inc. Div Actuation Division).
Key specifications for 145902: Stem Diameter: 0.7455 INCHES MINIMUM AND 0.7460 INCHES MAXIMUM IN; Head Height: 0.6250 INCHES NOMINAL IN; Stem Length: 5.2540 INCHES MINIMUM AND 5.2640 INCHES MAXIMUM 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.