Joint Bolt M24x150

In modern railroad infrastructure, the Joint Bolt M24x150 (frequently called an M24 fish bolt, track joint bar bolt, or heavy track bolt) is a critical heavy-duty fastener. Its primary function is to secure the joint bars (fishplates) that hold two sections of rail track together. By tightly clamping these heavy steel components, the M24x150 bolt ensures precise track alignment, continuous load transfer, and structural safety under intense rolling loads.

Technical Specifications: Joint Bolt M24x150

As an established railway fasteners factory, we manufacture the M24x150 track bolt to the highest engineering standards to withstand the extreme stresses of transit networks. Below are the key technical parameters for this specific heavy-rail fastening configuration:

· Product Type: Heavy-Duty Rail Joint Bolt (M24x150)

· Material Composition: Premium High-Strength Carbon Steel

· Thread Diameter: 24 mm

· Total Bolt Length: 150 mm

· Thread Pitch: 3.0 mm (Coarse structural thread)

· Unit Weight: Approx. 0.65 kg per piece

· Primary Rail Compatibility: Heavy Mainlines, High-Traffic Freight Routes, and Industrial Tracks

Core Engineering & Application Details

1. High-Vibration Fastening Assemblies

To combat continuous dynamic wheel impacts and violent structural vibrations, the Joint Bolt M24x150 is typically supplied as a complete, ready-to-install kit consisting of:

· The Threaded Track Bolt: Offers deep thread engagement for immense clamping power.

· Heavy Rail Nuts: Precision-machined to match the bolt grading and guarantee zero thread stripping.

· High-Elasticity Spring Washers: Vital for maintaining constant tension and preventing spontaneous bolt loosening over time.

2. Anti-Rotation Head and Neck Configurations

Efficiency during track installation and maintenance is achieved through specialized geometry. To prevent the M24x150 joint bolt from spinning when maintenance crews apply high torque to the nut, the bolts are forged with:

· Button Head Oval Neck (BHON): The industry standard where the elliptic neck locks tightly into the pre-slotted holes of the rail fishplate.

· Diamond Neck: An alternative secure locking profile frequently specified for international export track layouts.

3. Advanced Metallurgical Strength & Materials

Operating railway tracks endure extreme thermal expansion and cold contraction forces. Therefore, our M24x150 fasteners utilize premium materials and heat treatments:

· High-Strength Carbon Steel: Utilizing top-grade structural steel variants like C45 or 45# steel.

· Quenching & Tempering: Heat-treated to structural Grades 8.8, 10.9, or 12.9 for extreme tensile limits.

· Surface Anti-Rust Coatings: Available in Plain/Oiled, Black Oxide, Hot-Dip Galvanized (HDG), or Dacromet to maximize corrosion resistance in harsh, outdoor environments.

4. Strict Global Regulatory Standards

To ensure universal interoperability across diverse international transit systems, our production lines closely match strict industry benchmarks:

· GOST 11530-76 / 11530-93 (Standard for heavy railway track bolts)

· DIN, ISO, AREMA, and BS Standards

The Complete M22 & M24 Product Matrix

While the Joint Bolt M24x150 is optimized for maximum clamping force on heavy mainlines, we also manufacture alternative sizes to fit various rail profiles:

Why Source from Signum Rail Fasteners China?

Signum Rail Fasteners China is a premier, world-class railway fasteners factory. We manufacture premium-grade, custom rail joint bolts tailored exactly to your unique engineering drawings and material requirements.

· 2-Shift Workforce: Our manufacturing facility operates round-the-clock production shifts to deliver high-volume orders within exceptionally short lead times.

· Strict Quality Control (QC): A stringent, high-efficiency QC inspection team monitors every batch—from raw steel processing to final thread gauging—guaranteeing elite product reliability.

· OEM & Custom Engineering: We easily accommodate non-standard dimension adjustments, specialized coatings, and precise material grading requests.

Request a Quick B2B Quote

Looking for a reliable M24x150 joint bolt supplier for your next infrastructure project? Contact Signum Rail Fasteners today to get a rapid, competitive quotation on M22 and M24 rail joint bolts.