PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

17934Piston,hydraulic Brake,master Cy

Eaton Aerospace Llc Dba Eaton Aerospace Jackson · NSN 1630-00-227-6523 · FSC 1630 · No Item Name Available
Verified by PartsTable
NSN 1630-00-227-6523 — this item is cataloged by the U.S. Government under National Stock Number 1630-00-227-6523. Primary manufacturer part number: 17934.
Features
  • Piston,hydraulic Brake,master Cy — FSC 1630
  • Groove Diameter: 0.747 INCHES NOMINAL IN
  • Cup Protector: NOT INCLUDED
  • Largest Outside Diameter: 0.988 INCHES NOMINAL IN
  • Secondary Cup: NOT INCLUDED
  • Groove Width: 0.193 INCHES NOMINAL IN
  • Length: 5.937 INCHES NOMINAL IN
  • Surface Feature: EXTERNALLY GROOVED FOR SECONDARY CUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Piston,hydraulic Brake,master Cy, cataloged under National Stock Number 1630-00-227-6523, 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 10 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1630-00-227-6523
Primary Part Number17934
Item NamePiston,hydraulic Brake,master Cy
FSC / FSG1630 / 16 — No Item Name Available
ManufacturerEaton Aerospace Llc Dba Eaton Aerospace Jackson
StatusACTIVE
Groove Diameter0.747 INCHES NOMINAL IN
Cup ProtectorNOT INCLUDED
Largest Outside Diameter0.988 INCHES NOMINAL IN
Secondary CupNOT INCLUDED
Groove Width0.193 INCHES NOMINAL IN
Length5.937 INCHES NOMINAL IN
Surface FeatureEXTERNALLY GROOVED FOR SECONDARY CUP
Size Designator1
Locking RingNOT INCLUDED
Mounting MethodINTEGRAL PUSH ROD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3110-00-155-746009078-09196 INTERCHANGEABLE
Bearing,roller,tapered
The Timken Corporation
3455-00-227-986154-10105 INTERCHANGEABLE
Cutter,milling,involute Gear
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
1005-00-344-5889 INTERCHANGEABLE
Pin,firing Pin Cam
4130-01-459-9184 INTERCHANGEABLE
Vacu-Discs
Cross-Reference Index
Part NumberManufacturer
17934 PRIMARY Eaton Aerospace Llc Dba Eaton Aerospace Jackson (USA)
Related Parts
3110-00-155-7460INTERCHANGEABLE
BEARING,ROLLER,TAPERED
09078-09196
3455-00-227-9861INTERCHANGEABLE
CUTTER,MILLING,INVOLUTE GEAR
54-10105
1005-00-344-5889INTERCHANGEABLE
PIN,FIRING PIN CAM
4130-01-459-9184INTERCHANGEABLE
VACU-DISCS

Frequently Asked Questions

What is NSN 1630-00-227-6523?

NSN 1630-00-227-6523 is a Piston,hydraulic Brake,master Cy, 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 1630-00-227-6523?

NSN 1630-00-227-6523 has 1 cross-referenced part number: 17934 (Eaton Aerospace Llc Dba Eaton Aerospace Jackson).

What NSN replaces 1630-00-227-6523?

There are 4 known substitutes for 1630-00-227-6523: 3110-00-155-7460, 3455-00-227-9861, 1005-00-344-5889 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 17934?

Key specifications for 17934: Groove Diameter: 0.747 INCHES NOMINAL IN; Cup Protector: NOT INCLUDED; Largest Outside Diameter: 0.988 INCHES NOMINAL IN; Secondary Cup: NOT INCLUDED. 10 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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