PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

387993C91Cylinder Assembly,hydraulic Brak

Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ · NSN 2530-00-155-7226 · FSC 2530 · No Item Name Available
Verified by PartsTable
NSN 2530-00-155-7226 — this item is cataloged by the U.S. Government under National Stock Number 2530-00-155-7226. Primary manufacturer part number: 387993C91.
Features
  • Cylinder Assembly,hydraulic Brak — FSC 2530
  • Port Thread Diameter: 0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
  • Port Style: FLARE LOCATION NOT OTHERWISE SPECIFIED
  • Body Outside Diameter: 1.465 INCHES NOMINAL IN
  • Bore Diameter: 1.250 INCHES NOMINAL IN
  • Mounting Provision: THREADED MOUNTING HOLES
  • Port Thread Series Designator: UNF LOCATION NOT OTHERWISE SPECIFIED
  • Mounting Facility Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
Applications
  • Applications requiring Steel Body construction
General Description

The Cylinder Assembly,hydraulic Brak, cataloged under National Stock Number 2530-00-155-7226, is classified within Federal Supply Class 2530 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2530-00-155-7226
Primary Part Number387993C91
Item NameCylinder Assembly,hydraulic Brak
FSC / FSG2530 / 25 — No Item Name Available
ManufacturerNavistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
StatusACTIVE
Port Thread Diameter0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Port StyleFLARE LOCATION NOT OTHERWISE SPECIFIED
Body Outside Diameter1.465 INCHES NOMINAL IN
Bore Diameter1.250 INCHES NOMINAL IN
Mounting ProvisionTHREADED MOUNTING HOLES
Port Thread Series DesignatorUNF LOCATION NOT OTHERWISE SPECIFIED
Mounting Facility Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Mounting Type and LocationFLANGE CENTER SECTION
Extended Length3.000 INCHES NOMINAL IN
Mounting Facility Thread DirectionRIGHT-HAND
Mounting Provision Arrangement StyleTWO HOLE
Design CharacteristicsDOUBLE ACTING SINGLE CYLINDER
Port Thread Diameter0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Port Thread Class2B LOCATION NOT OTHERWISE SPECIFIED
MaterialSTEEL BODY
Mounting Facility Thread Class2B
Mounting Facility Thread Diameter0.250 INCHES NOMINAL IN
Center to Center Distance Between Mounting Provisions1.250 INCHES NOMINAL IN
Seat Angle in Deg37.0 LOCATION NOT OTHERWISE SPECIFIED
Bleeding Feature Quantity1
Port StyleFLARE LOCATION NOT OTHERWISE SPECIFIED
Port Location and Quantity1 CENTER SECTION
Mounting Facility Thread Length0.500 INCHES NOMINAL IN
Bore TypeSTRAIGHT
Port Thread Quantity Per Inch20 LOCATION NOT OTHERWISE SPECIFIED
Compressed Length2.250 INCHES NOMINAL IN
Mounting Facility Thread Quantity Per Inch20
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5340-00-055-23111003704-13 INTERCHANGEABLE
Standoff,threaded,spacing
Armel De Llc Dba Armel Electronics
3895-00-126-0636 INTERCHANGEABLE
Arm
5975-00-265-7775RW100-50 INTERCHANGEABLE
Reducing Washer,knockout
Egs Electrical Group Appleton Div
4730-00-277-544152454 INTERCHANGEABLE
Trap,steam
Spirax Sarco Inc Dba Spirax Sarco
6145-00-284-0067 INTERCHANGEABLE
Cable,power,electrical
5940-00-617-7557C678137-1 INTERCHANGEABLE
Terminal,lug
Honeywell International Inc Dba Honeywell
3120-00-662-89504500166-6 INTERCHANGEABLE
Bearing,sleeve
Agco Corp Parts Opn
5995-00-707-14193169 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Abm Equipment, Llc
4730-00-757-4492433857 INTERCHANGEABLE
Coupling,drainage Pipe
Avtron Aerospace Inc
5998-01-043-10023703 INTERCHANGEABLE
Circuit Card Assembly
Data Device Corp Dba Beta Transformer Technology
Cross-Reference Index
Part NumberManufacturer
3703 Allied Automotive Allied Aftermarket Div (USA)
387993C91 PRIMARY Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
FD72280 Federal Mogul Corp Sub Wagner Brake Moog Automotive Div (USA)
Related Parts
5340-00-055-2311INTERCHANGEABLE
STANDOFF,THREADED,SPACING
1003704-13
3895-00-126-0636INTERCHANGEABLE
ARM
5975-00-265-7775INTERCHANGEABLE
REDUCING WASHER,KNOCKOUT
RW100-50
4730-00-277-5441INTERCHANGEABLE
TRAP,STEAM
52454
6145-00-284-0067INTERCHANGEABLE
CABLE,POWER,ELECTRICAL
5940-00-617-7557INTERCHANGEABLE
TERMINAL,LUG
C678137-1
3120-00-662-8950INTERCHANGEABLE
BEARING,SLEEVE
4500166-6
5995-00-707-1419INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
3169
4730-00-757-4492INTERCHANGEABLE
COUPLING,DRAINAGE PIPE
433857
5998-01-043-1002INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
3703
5310-01-099-6539INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
37-03
6140-01-143-0738INTERCHANGEABLE
BATTERY,STORAGE

Frequently Asked Questions

What is NSN 2530-00-155-7226?

NSN 2530-00-155-7226 is a Cylinder Assembly,hydraulic Brak, manufactured by Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/, classified under FSC 2530 (No Item Name Available). Status: active.

What are the part numbers for NSN 2530-00-155-7226?

NSN 2530-00-155-7226 has 3 cross-referenced part numbers: 3703 (Allied Automotive Allied Aftermarket Div), 387993C91 (Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/), FD72280 (Federal Mogul Corp Sub Wagner Brake Moog Automotive Div).

What NSN replaces 2530-00-155-7226?

There are 12 known substitutes for 2530-00-155-7226: 5340-00-055-2311, 3895-00-126-0636, 5975-00-265-7775 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 387993C91?

Key specifications for 387993C91: Port Thread Diameter: 0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Port Style: FLARE LOCATION NOT OTHERWISE SPECIFIED; Body Outside Diameter: 1.465 INCHES NOMINAL IN; Bore Diameter: 1.250 INCHES NOMINAL IN. 30 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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