The Piston, cataloged under National Stock Number 2240-00-366-2257, is classified within Federal Supply Class 2240 (Locomotive and Rail Car Accessories and Components) of the Railway Equipment group. The manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2240-00-366-2257 |
| Primary Part Number | EV4119 |
| Item Name | Piston |
| FSC / FSG | 2240 / 22 — Locomotive and Rail Car Accessories and Components |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| EV4119 | Eaton Aerospace, Llc Dba Jackson South (USA) |
| Reference | Meaning |
|---|---|
| EV4119 | 5/9 Secondary reference U.S. Government activity |
| 526171 | 3/2 Design control — primary reference U.S. Government activity |
| EV4119 | 5/9 Secondary reference General Signal Corp |
NSN 2240-00-366-2257 is a Piston, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 2240, Locomotive and Rail Car Accessories and Components. Status: active.
NSN 2240-00-366-2257 has 1 manufacturer part number on file: EV4119 (Eaton Aerospace, Llc Dba Jackson South).
2 possible matches (shared part number, not a government interchangeability claim): 5962-01-371-2701, 4720-01-417-5911. Verify interchangeability with system specifications before substitution.
Key specifications for EV4119: End Item Identification: 2210001128504,2210002620751,2210002878901,2210002992854. 0 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.