The Insert,engine Valve Seat, cataloged under National Stock Number 2815-00-951-8235, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Insert,engine Valve Seat |
| FSC / FSG | 2815 — Diesel Engines and Components (FSG 28) |
| Manufacturers | Trw Inc Trw Intl Trade Government Sales Dept (CAGE 31033); Caterpillar Inc Div Caterpillar Defense (CAGE 11083); Peterson Tractor Co. (CAGE 02067) |
| Parameter | Value |
|---|---|
| NSN | 2815-00-951-8235 |
| Primary Part Number | 5S1757 |
| Item Name | Insert,engine Valve Seat |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| 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 |
|---|---|
| IS342 | Trw Inc Trw Intl Trade Government Sales Dept (USA) |
| 5S1757 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 5S1757 | Peterson Tractor Co. (USA) |
| Reference | Meaning |
|---|---|
| 5191757 | 5/9 Secondary reference Striegel Supply, Inc. Dba Striegel Supply Inc |
| 4M4320 | 5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense |
| IPD4M4320 | 5/9 Secondary reference Industrial Parts Depot, Llc Dba Ipd |
| IPD5S1757 | 5/9 Secondary reference Industrial Parts Depot, Llc Dba Ipd |
NSN 2815-00-951-8235 is a Insert,engine Valve Seat, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-951-8235 has 3 manufacturer part numbers on file: IS342 (Trw Inc Trw Intl Trade Government Sales Dept), 5S1757 (Caterpillar Inc Div Caterpillar Defense), 5S1757 (Peterson Tractor Co.).
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.