The Valve,poppet,engine, cataloged under National Stock Number 2815-01-018-5178, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-01-018-5178 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Status | ACTIVE |
| Stem Diameter | 0.3720 INCHES NOMINAL IN |
| Head Height | 0.1800 INCHES NOMINAL IN |
| Stem Length | 5.2300 INCHES NOMINAL IN |
| Seat Angle in Deg | 45.0 |
| Neck Radius | 0.5000 INCHES NOMINAL IN |
| Groove Diameter | 0.3150 INCHES NOMINAL IN |
| Distance From Groove to Stem End | 0.2400 INCHES NOMINAL IN |
| Outside Diameter | 1.8920 INCHES NOMINAL IN |
| Stem Style | GROOVED |
| Head Style | FLAT |
| Carbon Relief Groove | NOT INCLUDED |
| Material | STEEL OVERALL |
| Groove Width | 0.0900 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 |
| Reference | Meaning |
|---|---|
| 351-5042D | C/1 Advisory reference — outside the item-of-supply concept Astec America Inc. |
| 351-50420 | 3/2 Design control — primary reference U.S. Government activity |
| 351-50420 | 5/9 Secondary reference Astec America Inc. |
| 351-50420 | C/1 Advisory reference — outside the item-of-supply concept Curtis Engine & Equipment Company, Inc. Dba Curtis Engine & Equipment |
NSN 2815-01-018-5178 is a Valve,poppet,engine, classified under FSC 2815, Diesel Engines and Components. Status: active.
Key specifications for 2815-01-018-5178: Stem Diameter: 0.3720 INCHES NOMINAL IN; Head Height: 0.1800 INCHES NOMINAL IN; Stem Length: 5.2300 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.