PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

391320C91Cylinder Assembly,hydraulic Brak

Navistar Intl Corp Truck Br Ohio Plant · NSN 2530-00-300-6798 · FSC 2530 · No Item Name Available
Verified by PartsTable
NSN 2530-00-300-6798 — this item is cataloged by the U.S. Government under National Stock Number 2530-00-300-6798. Primary manufacturer part number: 391320C91.
Features
  • Cylinder Assembly,hydraulic Brak — FSC 2530
  • Mounting Provision Arrangement Style: TWO HOLE
  • Bleeding Feature Quantity: 1
  • Design Characteristics: DOUBLE ACTING SINGLE CYLINDER
  • Seat Angle in Deg: 37.0 LOCATION NOT OTHERWISE SPECIFIED
  • Center to Center Distance Between Mounting Provisions: 1.625 INCHES NOMINAL IN
  • Mounting Facility Thread Class: 2B
  • Mounting Facility Thread Diameter: 0.313 INCHES NOMINAL IN
Applications
  • Applications requiring Iron Cast Body construction
General Description

The Cylinder Assembly,hydraulic Brak, cataloged under National Stock Number 2530-00-300-6798, 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 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 9 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
NSN2530-00-300-6798
Primary Part Number391320C91
Item NameCylinder Assembly,hydraulic Brak
FSC / FSG2530 / 25 — No Item Name Available
ManufacturerNavistar Intl Corp Truck Br Ohio Plant
StatusACTIVE
Mounting Provision Arrangement StyleTWO HOLE
Bleeding Feature Quantity1
Design CharacteristicsDOUBLE ACTING SINGLE CYLINDER
Seat Angle in Deg37.0 LOCATION NOT OTHERWISE SPECIFIED
Center to Center Distance Between Mounting Provisions1.625 INCHES NOMINAL IN
Mounting Facility Thread Class2B
Mounting Facility Thread Diameter0.313 INCHES NOMINAL IN
Port StyleINVERTED FLARE LOCATION NOT OTHERWISE SPECIFIED
Port Thread Series DesignatorUNF LOCATION NOT OTHERWISE SPECIFIED
MaterialIRON CAST BODY
Overall Diameter1.500 INCHES NOMINAL IN
Mounting ProvisionTHREADED MOUNTING HOLES
Mounting Facility Length2.250 INCHES NOMINAL IN
Bore Diameter1.188 INCHES NOMINAL IN
Mounting Facility Thread Length0.500 INCHES NOMINAL IN
Mounting Facility Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Mounting PositionLEFT
Mounting Facility Thread Quantity Per Inch18
Bore TypeSTRAIGHT
Port Thread Quantity Per Inch24 LOCATION NOT OTHERWISE SPECIFIED
Port Thread Class2B LOCATION NOT OTHERWISE SPECIFIED
Mounting Facility Thread DirectionRIGHT-HAND
Port Thread Diameter0.375 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Mounting Type and LocationFLANGE CENTER SECTION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6625-00-078-5695407-733 INTERCHANGEABLE
Meter,multiple Scale
Heathkit Co Inc Dba Heathkit Educational Systems
5340-00-255-43993547 INTERCHANGEABLE
Cap,protective,dust and Moisture
Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp
6750-00-274-6725 INTERCHANGEABLE
Ammonium Thiosulfate,photographi
5998-00-325-2282172450 INTERCHANGEABLE
Printed Wiring Board
Telemechanics Inc
5325-00-489-3086Z3114 INTERCHANGEABLE
Grommet,nonmetallic
Minor Rubber Co Inc
3110-00-554-3197 INTERCHANGEABLE
Bearing,ball,annular
6675-00-641-3166 INTERCHANGEABLE
Protractor,semicircular
5950-00-648-1055 INTERCHANGEABLE
Transformer,radio Frequency
3110-00-857-0833AC25716 INTERCHANGEABLE
Bearing,roller,self-Aligning
Eagle Crusher Co Inc Dba Stedman Machine Co
5950-01-046-6969 INTERCHANGEABLE
Transformer,power
Cross-Reference Index
Part NumberManufacturer
3547 Allied Automotive Allied Aftermarket Div (USA)
172-450 Delco Moraine Div of General Motors Corp (USA)
WC170 C E Niehoff & Co (USA)
3547 Bendix Corp the (USA)
3547 Bendix Corp the Brake and Steering Div (USA)
391320C91 PRIMARY Navistar Intl Corp Truck Br Ohio Plant (USA)
WC170 Trw Inc Replacement Parts Div (USA)
172-450 General Motors Corp Delco Electronics Div (USA)
37250 Echlin Inc (USA)
Related Parts
6625-00-078-5695INTERCHANGEABLE
METER,MULTIPLE SCALE
407-733
5340-00-255-4399INTERCHANGEABLE
CAP,PROTECTIVE,DUST AND MOISTURE
3547
6750-00-274-6725INTERCHANGEABLE
AMMONIUM THIOSULFATE,PHOTOGRAPHI
5998-00-325-2282INTERCHANGEABLE
PRINTED WIRING BOARD
172450
5325-00-489-3086INTERCHANGEABLE
GROMMET,NONMETALLIC
Z3114
3110-00-554-3197INTERCHANGEABLE
BEARING,BALL,ANNULAR
6675-00-641-3166INTERCHANGEABLE
PROTRACTOR,SEMICIRCULAR
5950-00-648-1055INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
3110-00-857-0833INTERCHANGEABLE
BEARING,ROLLER,SELF-ALIGNING
AC25716
5950-01-046-6969INTERCHANGEABLE
TRANSFORMER,POWER
5970-01-060-1413INTERCHANGEABLE
INSULATOR,BUSHING
37250
6530-01-262-0634INTERCHANGEABLE
PAD,COLD TREATMENT
3547

Frequently Asked Questions

What is NSN 2530-00-300-6798?

NSN 2530-00-300-6798 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 2530-00-300-6798?

NSN 2530-00-300-6798 has 9 cross-referenced part numbers: 3547 (Allied Automotive Allied Aftermarket Div), 172-450 (Delco Moraine Div of General Motors Corp), WC170 (C E Niehoff & Co), 3547 (Bendix Corp the), 3547 (Bendix Corp the Brake and Steering Div) and 4 more.

What NSN replaces 2530-00-300-6798?

There are 12 known substitutes for 2530-00-300-6798: 6625-00-078-5695, 5340-00-255-4399, 6750-00-274-6725 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 391320C91?

Key specifications for 391320C91: Mounting Provision Arrangement Style: TWO HOLE; Bleeding Feature Quantity: 1; Design Characteristics: DOUBLE ACTING SINGLE CYLINDER; Seat Angle in Deg: 37.0 LOCATION NOT OTHERWISE SPECIFIED. 26 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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