The Guide,valve Stem, cataloged under National Stock Number 2810-00-491-7900, 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 10 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 | 2810-00-491-7900 |
| Primary Part Number | 149443Y9 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 2810 / 28 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components |
| Manufacturer | Curtiss-Wright Controls, Inc. Div Actuation Division |
| Status | ACTIVE |
| FSC Application Data | ACFT ENG R1300 |
| Major Diameter Length | 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Bb End Shank Diameter | 1.037 INCHES NOMINAL IN |
| Style Designator | PLAIN FLANGED |
| Material Document and Classification | AMS 5392 ASSN STD 1ST MATERIAL RESPONSE |
| Bore Counterbore | NOT INCLUDED |
| Outside Diameter | 1.420 INCHES NOMINAL IN |
| Bore Diameter | 0.7360 INCHES MINIMUM AND 0.7380 INCHES MAXIMUM IN |
| Material | IRON CAST UNS F47004 |
| Bore Countersink | NOT INCLUDED |
| 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 |
|---|---|
| 149443Y9 PRIMARY | Curtiss-Wright Controls, Inc. Div Actuation Division (USA) |
NSN 2810-00-491-7900 is a Guide,valve Stem, manufactured by Curtiss-Wright Controls, Inc. Div Actuation Division, classified under FSC 2810, Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components. Status: active.
NSN 2810-00-491-7900 has 1 manufacturer part number on file: 149443Y9 (Curtiss-Wright Controls, Inc. Div Actuation Division).
Key specifications for 149443Y9: FSC Application Data: ACFT ENG R1300; Major Diameter Length: 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Bb End Shank Diameter: 1.037 INCHES NOMINAL IN; Style Designator: PLAIN FLANGED. 10 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.