The Piston, cataloged under National Stock Number 3950-00-434-4537, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3950-00-434-4537 |
| Primary Part Number | 250859 |
| Item Name | Piston |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL. 6.875 IN. O/A LG; 1.345 IN. MIN 1.345 IN. MAJOR DIA; 0.505 IN. HUB DIA; 0.625 IN. LG 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 |
|---|---|
| 250859 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
| Reference | Meaning |
|---|---|
| 834448 PIECE 53 | C/1 Advisory reference — outside the item-of-supply concept Eaton Aerospace, Llc Dba Jackson South |
NSN 3950-00-434-4537 is a Piston, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-00-434-4537 has 1 manufacturer part number on file: 250859 (Eaton Aerospace, Llc Dba Jackson South).
Key specifications for 250859: General Characteristics Item Description: STEEL. 6.875 IN. O/A LG; 1.345 IN. MIN 1.345 IN. MAJOR DIA; 0.505 IN. HUB DIA; 0.625 IN. LG IN. 1 specification is 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.