The Expander,cup,hydraulic Brake Cyl, cataloged under National Stock Number 1630-00-474-0550, is classified within Federal Supply Class 1630 (Aircraft Wheel and Brake Systems) of the Aircraft Components and Accessories group. The manufacturer of record is Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St). 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. 3 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 | 1630-00-474-0550 |
| Primary Part Number | 59656 |
| Item Name | Expander,cup,hydraulic Brake Cyl |
| FSC / FSG | 1630 / 16 — Aircraft Wheel and Brake Systems |
| Manufacturer | Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) |
| Status | ACTIVE |
| General Characteristics Item Description | EXPANDER RINGS 2,SPRING HELICAL COMPRESSION 1,EXPANDER RINGS SOLDEREDTO 1ST AND LAST COIL OF SPRING |
| 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 |
|---|---|
| 59656 PRIMARY | Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) (USA) |
NSN 1630-00-474-0550 is a Expander,cup,hydraulic Brake Cyl, manufactured by Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St), classified under FSC 1630, Aircraft Wheel and Brake Systems. Status: active.
NSN 1630-00-474-0550 has 1 manufacturer part number on file: 59656 (Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St)).
3 possible matches (shared part number, not a government interchangeability claim): 3040-00-949-7857, 4320-01-026-3230, 5995-01-299-4507. Verify interchangeability with system specifications before substitution.
Key specifications for 59656: General Characteristics Item Description: EXPANDER RINGS 2,SPRING HELICAL COMPRESSION 1,EXPANDER RINGS SOLDEREDTO 1ST AND LAST COIL OF SPRING. 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.
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.