The Cup,hydraulic Brake Cylinder, cataloged under National Stock Number 1630-00-093-9673, 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 14 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. 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 | 1630-00-093-9673 |
| Primary Part Number | 59479 |
| Item Name | Cup,hydraulic Brake Cylinder |
| FSC / FSG | 1630 / 16 — Aircraft Wheel and Brake Systems |
| Manufacturer | Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) |
| Status | ACTIVE |
| Feathered Lip Feature | NOT INCLUDED |
| FSC Application Data | BRAKE ASSY,BRAKE SYSTEM,ACFT |
| Largest Outside Diameter | 2.094 INCHES MAXIMUM IN |
| Outer Periphery Base Groove | NOT INCLUDED |
| Mounting Method | CENTER HOLE |
| Mounting Hole Diameter | 1.225 INCHES MINIMUM AND 1.235 INCHES MAXIMUM IN |
| Sealing Lip Length | 0.10975 INCHES MINIMUM AND 0.11975 INCHES MAXIMUM IN |
| Size Designator | 2 IN. IN |
| Base Outside Diameter | 1.750 INCHES NOMINAL IN |
| Base Inside Projection | NOT INCLUDED |
| Base Thickness | 0.062 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC |
| Thru-Hole Length | 0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM IN |
| Cup Protector | NOT INCLUDED |
| 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 |
|---|---|
| 59479 PRIMARY | Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) (USA) |
NSN 1630-00-093-9673 is a Cup,hydraulic Brake Cylinder, 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 1630-00-093-9673 has 1 manufacturer part number on file: 59479 (Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St)).
3 possible matches (shared part number, not a government interchangeability claim): 5365-00-442-9200, 5905-01-035-7409, 4820-01-189-7206. Verify interchangeability with system specifications before substitution.
Key specifications for 59479: Feathered Lip Feature: NOT INCLUDED; FSC Application Data: BRAKE ASSY,BRAKE SYSTEM,ACFT; Largest Outside Diameter: 2.094 INCHES MAXIMUM IN; Outer Periphery Base Groove: NOT INCLUDED. 14 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.