The Valve,poppet,engine, cataloged under National Stock Number 2815-01-028-1515, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Cummins Inc.. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2815-01-028-1515 |
| Primary Part Number | 3275779 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Cummins Inc. |
| Status | ACTIVE |
| Stem Diameter | 0.3790 INCHES NOMINAL IN |
| Head Height | 0.2450 INCHES NOMINAL IN |
| Stem Length | 5.3200 INCHES NOMINAL IN |
| Seat Angle in Deg | 30.0 |
| Neck Radius | 0.2500 INCHES NOMINAL IN |
| Groove Diameter | 0.3300 INCHES NOMINAL IN |
| Distance From Groove to Stem End | 0.1980 INCHES NOMINAL IN |
| Outside Diameter | 1.6085 INCHES NOMINAL IN |
| Stem Style | GROOVED |
| Head Style | FLAT |
| Carbon Relief Groove | INCLUDED |
| Material | STEEL CORROSION RESISTING TIP |
| Material | STEEL CORROSION RESISTING HEAD |
| Material | STEEL CORROSION RESISTING SEAT FACE |
| Material | STEEL CORROSION RESISTING STEM |
| Groove Width | 0.0800 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 |
|---|---|
| 3275779 PRIMARY | Cummins Inc. (USA) |
| Reference | Meaning |
|---|---|
| 166773 | 5/9 Secondary reference Cummins Inc. |
NSN 2815-01-028-1515 is a Valve,poppet,engine, manufactured by Cummins Inc., classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-01-028-1515 has 1 manufacturer part number on file: 3275779 (Cummins Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-207-4924. Verify interchangeability with system specifications before substitution.
Key specifications for 3275779: Stem Diameter: 0.3790 INCHES NOMINAL IN; Head Height: 0.2450 INCHES NOMINAL IN; Stem Length: 5.3200 INCHES NOMINAL IN; Seat Angle in Deg: 30.0. 16 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.