The Guide,valve Stem, cataloged under National Stock Number 2815-01-018-6469, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Astec America Inc.. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2815-01-018-6469 |
| Primary Part Number | 291-50800 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Astec America Inc. |
| Status | ACTIVE |
| Shoulder Second Fillet Radius | 0.020 INCHES NOMINAL IN |
| Major Diameter Length | 0.123 INCHES NOMINAL IN |
| Bb End Shank Diameter | 0.625 INCHES NOMINAL IN |
| Style Designator | PLAIN-SHOULDERED |
| Bore Counterbore | NOT INCLUDED |
| Outside Diameter | 0.928 INCHES NOMINAL IN |
| Aa End Radius | 0.020 INCHES NOMINAL IN |
| Length From Aa End to Largest Diameter Face | 0.450 INCHES NOMINAL IN |
| Aa End Diameter | 0.622 INCHES NOMINAL IN |
| Bb End Radius | 0.020 INCHES NOMINAL IN |
| Bore Diameter | 0.3750 INCHES NOMINAL IN |
| Material | STEEL |
| Shoulder First Fillet Radius | 0.020 INCHES NOMINAL IN |
| 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 |
|---|---|
| 291-50800 PRIMARY | Astec America Inc. (USA) |
| Reference | Meaning |
|---|---|
| 291-50800 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 2815-01-018-6469 is a Guide,valve Stem, manufactured by Astec America Inc., classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-01-018-6469 has 1 manufacturer part number on file: 291-50800 (Astec America Inc.).
Key specifications for 291-50800: Shoulder Second Fillet Radius: 0.020 INCHES NOMINAL IN; Major Diameter Length: 0.123 INCHES NOMINAL IN; Bb End Shank Diameter: 0.625 INCHES NOMINAL IN; Style Designator: PLAIN-SHOULDERED. 14 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.