The Piston,hydraulic Brake, cataloged under National Stock Number 1630-00-689-8902, 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 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1630-00-689-8902 |
| Primary Part Number | 2611808 |
| Item Name | Piston,hydraulic Brake |
| FSC / FSG | 1630 / 16 — Aircraft Wheel and Brake Systems |
| Manufacturer | Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) |
| Status | ACTIVE |
| Length | 1.200 INCHES MINIMUM AND 1.300 INCHES MAXIMUM IN |
| Piston Cup | NOT INCLUDED |
| Surface Condition | EXTERNALLY GROOVED |
| Groove Depth | 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Outside Diameter | 1.370 INCHES MINIMUM AND 1.371 INCHES MAXIMUM IN |
| Steel Insert | NOT INCLUDED |
| Material | ALUMINUM ALLOY |
| Construction Type | ONE-PIECE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 1630-00-689-8902 is a Piston,hydraulic Brake, 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 1630-00-689-8902 has 2 manufacturer part numbers on file: 513537 (Nasco Aircraft Brake, Inc. Dba Nasco Aircraft Brake Inc Div Nasco), 2611808 (Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St)).
Key specifications for 2611808: Length: 1.200 INCHES MINIMUM AND 1.300 INCHES MAXIMUM IN; Piston Cup: NOT INCLUDED; Surface Condition: EXTERNALLY GROOVED; Groove Depth: 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN. 8 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.