The Guide,valve Stem, cataloged under National Stock Number 2815-00-450-9331, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-00-450-9331 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Status | ACTIVE |
| Shoulder Second Fillet Radius | 0.281 INCHES NOMINAL IN |
| Major Diameter Length | 0.344 INCHES NOMINAL IN |
| Bb End Shank Diameter | 1.000 INCHES NOMINAL IN |
| Style Designator | PLAIN-STEPPED SHOULDER |
| Bore Counterbore | NOT INCLUDED |
| Outside Diameter | 1.750 INCHES NOMINAL IN |
| Aa End Radius | 0.266 INCHES NOMINAL IN |
| Shoulder Diameter | 1.182 INCHES NOMINAL IN |
| Length From Aa End to Largest Diameter Face | 2.000 INCHES NOMINAL IN |
| Aa End Diameter | 0.625 INCHES NOMINAL IN |
| Bore Diameter | 0.5000 INCHES NOMINAL IN |
| Material | STEEL |
| Shoulder Length | 0.312 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 |
| Reference | Meaning |
|---|---|
| 8335224 | 3/9 Design control — primary reference General Motors Corp Electro-Motive Div |
| 8335224 | 5/9 Secondary reference General Motors Corp |
NSN 2815-00-450-9331 is a Guide,valve Stem, classified under FSC 2815, Diesel Engines and Components. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 1005-00-605-2204. Verify interchangeability with system specifications before substitution.
Key specifications for 2815-00-450-9331: Shoulder Second Fillet Radius: 0.281 INCHES NOMINAL IN; Major Diameter Length: 0.344 INCHES NOMINAL IN; Bb End Shank Diameter: 1.000 INCHES NOMINAL IN; Style Designator: PLAIN-STEPPED SHOULDER. 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.