The Valve,poppet,engine, cataloged under National Stock Number 2815-01-174-7753, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Perkins Engines Inc. Government technical data includes 13 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 | 2815-01-174-7753 |
| Primary Part Number | 31431681 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Perkins Engines Inc |
| Status | ACTIVE |
| Stem Diameter | 0.3120 INCHES NOMINAL IN |
| Head Height | 0.1340 INCHES MINIMUM AND 0.1360 INCHES MAXIMUM IN |
| Stem Length | 4.3640 INCHES MINIMUM AND 4.3660 INCHES MAXIMUM IN |
| Seat Angle in Deg | 35.0 |
| Neck Radius | 0.4062 INCHES NOMINAL IN |
| Groove Diameter | 0.2500 INCHES NOMINAL IN |
| Distance From Groove to Stem End | 0.1250 INCHES NOMINAL IN |
| Outside Diameter | 1.5365 INCHES NOMINAL IN |
| Stem Style | GROOVED |
| Head Style | FLAT |
| Carbon Relief Groove | NOT INCLUDED |
| Material | STEEL OVERALL |
| Groove Width | 0.1120 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 |
|---|---|
| 31431681 PRIMARY | Perkins Engines Inc (USA) |
NSN 2815-01-174-7753 is a Valve,poppet,engine, manufactured by Perkins Engines Inc, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-01-174-7753 has 1 manufacturer part number on file: 31431681 (Perkins Engines Inc).
Key specifications for 31431681: Stem Diameter: 0.3120 INCHES NOMINAL IN; Head Height: 0.1340 INCHES MINIMUM AND 0.1360 INCHES MAXIMUM IN; Stem Length: 4.3640 INCHES MINIMUM AND 4.3660 INCHES MAXIMUM IN; Seat Angle in Deg: 35.0. 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.