PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

863791R91Cylinder Assembly,hydraulic Brak

Navistar Intl Corp Truck Br Ohio Plant · NSN 2530-00-873-2869 · FSC 2530 · No Item Name Available
Verified by PartsTable
NSN 2530-00-873-2869 — this item is cataloged by the U.S. Government under National Stock Number 2530-00-873-2869. Primary manufacturer part number: 863791R91.
Features
  • Cylinder Assembly,hydraulic Brak — FSC 2530
  • Seat Angle in Deg: 42.0 LOCATION NOT OTHERWISE SPECIFIED
  • Stoplight Switch Nominal Pipe Thread Size: 0.125 INCHES IN
  • Mounting Type and Location: FLANGE PISTON ROD END
  • Stoplight Switch Thread Series Designator: NPT
  • Port Thread Class: 2B LOCATION NOT OTHERWISE SPECIFIED
  • Mounting Facility Diameter: 0.405 INCHES NOMINAL IN
  • Straight Bore Inside Diameter: 1.125 INCHES NOMINAL IN
Applications
  • Applications requiring Iron Cast Body construction
General Description

The Cylinder Assembly,hydraulic Brak, cataloged under National Stock Number 2530-00-873-2869, 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 Truck Br Ohio Plant. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 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
NSN2530-00-873-2869
Primary Part Number863791R91
Item NameCylinder Assembly,hydraulic Brak
FSC / FSG2530 / 25 — No Item Name Available
ManufacturerNavistar Intl Corp Truck Br Ohio Plant
StatusACTIVE
Seat Angle in Deg42.0 LOCATION NOT OTHERWISE SPECIFIED
Stoplight Switch Nominal Pipe Thread Size0.125 INCHES IN
Mounting Type and LocationFLANGE PISTON ROD END
Stoplight Switch Thread Series DesignatorNPT
Port Thread Class2B LOCATION NOT OTHERWISE SPECIFIED
Mounting Facility Diameter0.405 INCHES NOMINAL IN
Straight Bore Inside Diameter1.125 INCHES NOMINAL IN
Mounting Provision Arrangement StyleFOUR HOLE RECTANGULAR
Port StyleINVERTED FLARE LOCATION NOT OTHERWISE SPECIFIED
Features ProvidedRUBBER BOOT
Port Thread Diameter0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Reservoir TypeINTEGRAL
Port Thread Series DesignatorUNS LOCATION NOT OTHERWISE SPECIFIED
Port Location and Quantity2 CYLINDER HEAD END
MaterialIRON CAST BODY
Port Thread Quantity Per Inch24 LOCATION NOT OTHERWISE SPECIFIED
Mounting ProvisionUNTHREADED MOUNTING HOLES
Longest Horizontal Distance Between Mounting Centers5.000 INCHES NOMINAL IN
Longest Vertical Distance Between Mounting Centers2.250 INCHES NOMINAL IN
Actuation MethodDIRECT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-005-6136 INTERCHANGEABLE
Bearing
5310-00-045-4007NASM35338-41 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5940-00-144-153036154 INTERCHANGEABLE
Terminal,lug
Te Connectivity Corporation
2825-00-146-804436154 INTERCHANGEABLE
Stuffing Box
Northrop Grumman Systems Corporation Div Marine Systems
5306-00-226-4823AEB02C312562AW9A91 INTERCHANGEABLE
Bolt,machine
The American Society of Mechanical Engineers
5940-00-269-79881133D INTERCHANGEABLE
Terminal,stud
Goe Engineering Co Inc
5905-00-279-6404D225K25R INTERCHANGEABLE
Resistor,adjustable
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5330-00-360-849727233C INTERCHANGEABLE
Gasket
Brinkley Technology Group Llc Dba Hercules Manufacturing
6760-00-411-71251358 INTERCHANGEABLE
Lens,camera,motion Picture
Birns & Sawyer, Inc.
9540-00-580-0987 INTERCHANGEABLE
Angle,structural
Cross-Reference Index
Part NumberManufacturer
36154 Echlin Inc (USA)
863791R91 Navistar International Corporation Dba Navistar (USA)
863791R91 PRIMARY Navistar Intl Corp Truck Br Ohio Plant (USA)
E39970 Eis Brake Parts Div of Standard Motor Products Inc (USA)
MC138 Trw Inc Replacement Parts Div (USA)
1358 Allied Automotive Allied Aftermarket Div (USA)
MC138 C E Niehoff & Co (USA)
Related Parts
3110-00-005-6136INTERCHANGEABLE
BEARING
5310-00-045-4007INTERCHANGEABLE
WASHER,LOCK
NASM35338-41
5940-00-144-1530INTERCHANGEABLE
TERMINAL,LUG
36154
2825-00-146-8044INTERCHANGEABLE
STUFFING BOX
36154
5306-00-226-4823INTERCHANGEABLE
BOLT,MACHINE
AEB02C312562AW9A91
5940-00-269-7988INTERCHANGEABLE
TERMINAL,STUD
1133D
5905-00-279-6404INTERCHANGEABLE
RESISTOR,ADJUSTABLE
D225K25R
5330-00-360-8497INTERCHANGEABLE
GASKET
27233C
6760-00-411-7125INTERCHANGEABLE
LENS,CAMERA,MOTION PICTURE
1358
9540-00-580-0987INTERCHANGEABLE
ANGLE,STRUCTURAL
5940-00-727-3097INTERCHANGEABLE
TERMINAL,LUG
1387-5
5330-00-776-8016INTERCHANGEABLE
GASKET
1DQD660

Frequently Asked Questions

What is NSN 2530-00-873-2869?

NSN 2530-00-873-2869 is a Cylinder Assembly,hydraulic Brak, manufactured by Navistar Intl Corp Truck Br Ohio Plant, classified under FSC 2530 (No Item Name Available). Status: active.

What are the part numbers for NSN 2530-00-873-2869?

NSN 2530-00-873-2869 has 7 cross-referenced part numbers: 36154 (Echlin Inc), 863791R91 (Navistar International Corporation Dba Navistar), 863791R91 (Navistar Intl Corp Truck Br Ohio Plant), E39970 (Eis Brake Parts Div of Standard Motor Products Inc), MC138 (Trw Inc Replacement Parts Div) and 2 more.

What NSN replaces 2530-00-873-2869?

There are 12 known substitutes for 2530-00-873-2869: 3110-00-005-6136, 5310-00-045-4007, 5940-00-144-1530 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 863791R91?

Key specifications for 863791R91: Seat Angle in Deg: 42.0 LOCATION NOT OTHERWISE SPECIFIED; Stoplight Switch Nominal Pipe Thread Size: 0.125 INCHES IN; Mounting Type and Location: FLANGE PISTON ROD END; Stoplight Switch Thread Series Designator: NPT. 23 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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