The Insert,engine Valve Seat, cataloged under National Stock Number 2815-01-566-5658, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Nd Defense Llc. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2815-01-566-5658 |
| Primary Part Number | 1842137C1 |
| Item Name | Insert,engine Valve Seat |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Nd Defense Llc |
| Status | ACTIVE |
| Body Outside Diameter | 1.583 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 1.330 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 1842137C1 PRIMARY | Nd Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| EMD-4700 | D/9 Drawing number reference only Nd Defense Llc |
NSN 2815-01-566-5658 is a Insert,engine Valve Seat, manufactured by Nd Defense Llc, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-01-566-5658 has 1 manufacturer part number on file: 1842137C1 (Nd Defense Llc).
Key specifications for 1842137C1: Overall Height: 0.250 INCHES NOMINAL IN; Body Outside Diameter: 1.583 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 1.330 INCHES NOMINAL IN. 4 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.