The Piston,hydraulic Brake,master Cy, cataloged under National Stock Number 1630-01-186-2950, is classified within Federal Supply Class 1630 (Aircraft Wheel and Brake Systems) of the Aircraft Components and Accessories group. The manufacturer of record is Textron Aviation Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1630-01-186-2950 |
| Primary Part Number | 4017506-1 |
| Item Name | Piston,hydraulic Brake,master Cy |
| FSC / FSG | 1630 / 16 — Aircraft Wheel and Brake Systems |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| FSC Application Data | AIRCRAFT BRAKE SYSTEM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4017506-1 PRIMARY | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| 4017506-1 | 3/9 Design control — primary reference Cessna Aircraft Company Dba Textron Aviation |
NSN 1630-01-186-2950 is a Piston,hydraulic Brake,master Cy, manufactured by Textron Aviation Inc, classified under FSC 1630, Aircraft Wheel and Brake Systems. Status: active.
NSN 1630-01-186-2950 has 1 manufacturer part number on file: 4017506-1 (Textron Aviation Inc).
Key specifications for 4017506-1: FSC Application Data: AIRCRAFT BRAKE SYSTEM; End Item Identification: A/T-37 AIRCRAFT. 1 specification is 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.
NSN 1630-01-186-2950 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.