The Piston,hydraulic Brake, cataloged under National Stock Number 2530-01-236-4959, is classified within Federal Supply Class 2530 (Vehicular Brake, Steering, Axle, Wheel, and Track Components) of the Vehicular Equipment Components group. The manufacturer of record is Deere & Company Dba Deere John Co. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2530-01-236-4959 |
| Primary Part Number | R39189 |
| Item Name | Piston,hydraulic Brake |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | Deere & Company Dba Deere John Co |
| Status | ACTIVE |
| Outside Diameter | 6.605 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| R39189 PRIMARY | Deere & Company Dba Deere John Co (USA) |
| Reference | Meaning |
|---|---|
| R39189 | 5/9 Secondary reference Deere & Co |
NSN 2530-01-236-4959 is a Piston,hydraulic Brake, manufactured by Deere & Company Dba Deere John Co, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-01-236-4959 has 1 manufacturer part number on file: R39189 (Deere & Company Dba Deere John Co).
Key specifications for R39189: Outside Diameter: 6.605 INCHES NOMINAL IN; End Item Identification: 2420-00-567-0135,TRACTOR,WHEELED,HIGH SPEED; Material: ALUMINUM ALLOY. 2 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.