PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12550-3Cylinder Assembly,hydraulic Brak

Eaton Aerospace Llc Dba Eaton Aerospace Jackson · NSN 1630-00-566-0339 · FSC 1630 · No Item Name Available
Verified by PartsTable
NSN 1630-00-566-0339 — this item is cataloged by the U.S. Government under National Stock Number 1630-00-566-0339. Primary manufacturer part number: 12550-3.
Features
  • Cylinder Assembly,hydraulic Brak — FSC 1630
  • Seat Angle in Deg: 60.0 LOCATION NOT OTHERWISE SPECIFIED
  • Bleeding Feature Quantity: 1
  • Port Thread Diameter: 0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
  • Port Thread Class: 3B LOCATION NOT OTHERWISE SPECIFIED
  • Port Style: GASKET SEAL LOCATION NOT OTHERWISE SPECIFIED
  • Port Thread Series Designator: UNF LOCATION NOT OTHERWISE SPECIFIED
  • Compressed Length: 10.620 INCHES NOMINAL IN
Applications
  • Applications requiring Aluminum Alloy A356.0 Body construction
General Description

The Cylinder Assembly,hydraulic Brak, cataloged under National Stock Number 1630-00-566-0339, is classified within Federal Supply Class 1630 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Eaton Aerospace Llc Dba Eaton Aerospace Jackson. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1630-00-566-0339
Primary Part Number12550-3
Item NameCylinder Assembly,hydraulic Brak
FSC / FSG1630 / 16 — No Item Name Available
ManufacturerEaton Aerospace Llc Dba Eaton Aerospace Jackson
StatusACTIVE
Seat Angle in Deg60.0 LOCATION NOT OTHERWISE SPECIFIED
Bleeding Feature Quantity1
Port Thread Diameter0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Port Thread Class3B LOCATION NOT OTHERWISE SPECIFIED
Port StyleGASKET SEAL LOCATION NOT OTHERWISE SPECIFIED
Port Thread Series DesignatorUNF LOCATION NOT OTHERWISE SPECIFIED
Compressed Length10.620 INCHES NOMINAL IN
MaterialALUMINUM ALLOY A356.0 BODY
Port Location and Quantity1 CENTER SECTION AND 1 CYLINDER HEAD END
Temp Rating-65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF
Actuation MethodDIRECT
Port Thread Quantity Per Inch20 LOCATION NOT OTHERWISE SPECIFIED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6210-00-299-40721255-03 INTERCHANGEABLE
Light,panel
Aerospace Lighting Corporation
5365-00-620-7263125503 INTERCHANGEABLE
Spacer,bearing
Eaton Aerospace, Llc Dba Jackson South
3130-01-284-3825P-WG220E INTERCHANGEABLE
Bearing Unit,ball
Rexnord Industries, Llc Div Link-Belt Bearing Operation
Cross-Reference Index
Part NumberManufacturer
12550-3 PRIMARY Eaton Aerospace Llc Dba Eaton Aerospace Jackson (USA)
Related Parts
6210-00-299-4072INTERCHANGEABLE
LIGHT,PANEL
1255-03
5365-00-620-7263INTERCHANGEABLE
SPACER,BEARING
125503
3130-01-284-3825INTERCHANGEABLE
BEARING UNIT,BALL
P-WG220E

Frequently Asked Questions

What is NSN 1630-00-566-0339?

NSN 1630-00-566-0339 is a Cylinder Assembly,hydraulic Brak, manufactured by Eaton Aerospace Llc Dba Eaton Aerospace Jackson, classified under FSC 1630 (No Item Name Available). Status: active.

What are the part numbers for NSN 1630-00-566-0339?

NSN 1630-00-566-0339 has 1 cross-referenced part number: 12550-3 (Eaton Aerospace Llc Dba Eaton Aerospace Jackson).

What NSN replaces 1630-00-566-0339?

There are 3 known substitutes for 1630-00-566-0339: 6210-00-299-4072, 5365-00-620-7263, 3130-01-284-3825. Verify interchangeability with system specifications before substitution.

What are the specifications of 12550-3?

Key specifications for 12550-3: Seat Angle in Deg: 60.0 LOCATION NOT OTHERWISE SPECIFIED; Bleeding Feature Quantity: 1; Port Thread Diameter: 0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Port Thread Class: 3B LOCATION NOT OTHERWISE SPECIFIED. 12 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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