PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

F34403Cylinder Assembly,hydraulic Brak

Federal Mogul Corp Sub Wagner Brake Moog Automotive Div · NSN 2530-00-859-4591 · FSC 2530 · No Item Name Available
Verified by PartsTable
NSN 2530-00-859-4591 — this item is cataloged by the U.S. Government under National Stock Number 2530-00-859-4591. Primary manufacturer part number: F34403.
Features
  • Cylinder Assembly,hydraulic Brak — FSC 2530
  • Port Thread Series Designator: UNF LOCATION NOT OTHERWISE SPECIFIED
  • Port Style: INVERTED FLARE LOCATION NOT OTHERWISE SPECIFIED
  • Material: STEEL BODY
  • Port Thread Diameter: 0.375 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
  • Port Thread Quantity Per Inch: 24.0 LOCATION NOT OTHERWISE SPECIFIED
  • Reservoir Type: INTEGRAL
  • Mounting Provision: UNTHREADED MOUNTING HOLES
Applications
  • Applications requiring Steel Body construction
General Description

The Cylinder Assembly,hydraulic Brak, cataloged under National Stock Number 2530-00-859-4591, is classified within Federal Supply Class 2530 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Federal Mogul Corp Sub Wagner Brake Moog Automotive Div. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2530-00-859-4591
Primary Part NumberF34403
Item NameCylinder Assembly,hydraulic Brak
FSC / FSG2530 / 25 — No Item Name Available
ManufacturerFederal Mogul Corp Sub Wagner Brake Moog Automotive Div
StatusCANCELLED
Port Thread Series DesignatorUNF LOCATION NOT OTHERWISE SPECIFIED
Port StyleINVERTED FLARE LOCATION NOT OTHERWISE SPECIFIED
MaterialSTEEL BODY
Port Thread Diameter0.375 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Port Thread Quantity Per Inch24.0 LOCATION NOT OTHERWISE SPECIFIED
Reservoir TypeINTEGRAL
Mounting ProvisionUNTHREADED MOUNTING HOLES
Mounting Type and LocationFLANGE PISTON ROD END
Center to Center Distance Between Mounting Provisions3.625 INCHES NOMINAL IN
Port Location and Quantity1 CENTER SECTION
Mounting Facility Diameter0.375 INCHES NOMINAL IN
Straight Bore Inside Diameter1.063 INCHES NOMINAL IN
Mounting Provision Arrangement StyleTWO HOLE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
5306-00-281-559034-403 INTERCHANGEABLE
Bolt,machine
Dresser Industries Inc Leroi Div
3120-00-466-4439 INTERCHANGEABLE
Bushing Special
4820-00-708-013391397A INTERCHANGEABLE
Disk,valve
Griswold Industries Dba Cla-Val Co
9905-00-902-30263440-3 INTERCHANGEABLE
Numeral,sign
Brady United States
6350-01-089-8128S3FIG123CX INTERCHANGEABLE
Horn,signal
Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc
5110-01-656-003534403 INTERCHANGEABLE
Cutter,pipe
Ridge Tool Company
Cross-Reference Index
Part NumberManufacturer
174-239 General Motors Corp Delco Electronics Div (USA)
174-239 Delco Moraine Div of General Motors Corp (USA)
M34403 Airtex Products Div of Uis Inc (USA)
E34403 Eis Brake Parts Div of Standard Motor Products Inc (USA)
1081 Allied Automotive Allied Aftermarket Div (USA)
34403 Echlin Inc (USA)
F34403 PRIMARY Federal Mogul Corp Sub Wagner Brake Moog Automotive Div (USA)
MC34403 Trw Inc Replacement Parts Div (USA)
3769224 General Motors Corp Chevrolet Motor Div Special Products Dept (USA)
5467733 General Motors Corp Chevrolet Motor Div Special Products Dept (USA)
1081 Bendix Corp the (USA)
5467733 PRIMARY General Motors Llc Dba General Motors Llc (USA)
MC34403 Raymark Industries Inc (USA)
MC34403 C E Niehoff & Co (USA)
Related Parts
5306-00-281-5590INTERCHANGEABLE
BOLT,MACHINE
34-403
3120-00-466-4439INTERCHANGEABLE
BUSHING SPECIAL
4820-00-708-0133INTERCHANGEABLE
DISK,VALVE
91397A
9905-00-902-3026INTERCHANGEABLE
NUMERAL,SIGN
3440-3
6350-01-089-8128INTERCHANGEABLE
HORN,SIGNAL
S3FIG123CX
5110-01-656-0035INTERCHANGEABLE
CUTTER,PIPE
34403

Frequently Asked Questions

What is NSN 2530-00-859-4591?

NSN 2530-00-859-4591 is a Cylinder Assembly,hydraulic Brak, manufactured by Federal Mogul Corp Sub Wagner Brake Moog Automotive Div, classified under FSC 2530 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2530-00-859-4591?

NSN 2530-00-859-4591 has 14 cross-referenced part numbers: 174-239 (General Motors Corp Delco Electronics Div), 174-239 (Delco Moraine Div of General Motors Corp), M34403 (Airtex Products Div of Uis Inc), E34403 (Eis Brake Parts Div of Standard Motor Products Inc), 1081 (Allied Automotive Allied Aftermarket Div) and 9 more.

What NSN replaces 2530-00-859-4591?

There are 6 known substitutes for 2530-00-859-4591: 5306-00-281-5590, 3120-00-466-4439, 4820-00-708-0133 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of F34403?

Key specifications for F34403: Port Thread Series Designator: UNF LOCATION NOT OTHERWISE SPECIFIED; Port Style: INVERTED FLARE LOCATION NOT OTHERWISE SPECIFIED; Material: STEEL BODY; Port Thread Diameter: 0.375 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2530-00-859-4591 still in active supply?

NSN 2530-00-859-4591 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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