Joint Bolt M24x160

In railroad infrastructure, the Joint Bolt M24x160 (frequently called an M24x160 fish bolt or heavy track bolt) is a critical heavy-duty fastener. Its primary function is to secure the thicker joint bars (fishplates) that hold heavy sections of rail track together. By tightly clamping these steel components, the M24x160 bolt ensures precise track alignment, continuous load transfer, and structural safety under intense rolling loads.

Technical Specifications: Joint Bolt M24x160

As an established railway fasteners factory, we manufacture the M24x160 track bolt to the highest engineering standards:

· Product Type: Heavy-Duty Rail Joint Bolt (M24x160)

· Material Composition: Premium High-Strength Carbon Steel / Alloy Steel

· Thread Diameter: 24 mm

· Total Bolt Length: 160 mm (Extended length for heavy-duty fishplates)

· Thread Pitch: 3.0 mm (Coarse structural thread)

· Unit Weight: Approx. 0.69 kg per piece

· Primary Rail Compatibility: Heavy Mainlines, High-Traffic Freight Routes, R-50/R-65 Rails, and Turnouts

Core Engineering & Application Details

1. High-Vibration Fastening Assemblies

To combat continuous dynamic wheel impacts, the Joint Bolt M24x160 is typically supplied as a complete, ready-to-install kit consisting of the threaded track bolt, matching heavy rail nuts to guarantee zero thread stripping, and high-elasticity spring washers to prevent spontaneous loosening.

2. Anti-Rotation Head and Neck Configurations

To prevent the M24x160 joint bolt from spinning when maintenance crews apply high torque to the nut, the bolts are forged with an oval neck (elliptic neck) or diamond neck profile. This geometry locks tightly into the pre-slotted holes of the rail fishplate.

3. Advanced Metallurgical Strength & Materials

Our M24x160 fasteners utilize premium materials like top-grade structural steel variants (C45 or 45# steel), heat-treated to structural Grades 8.8, 10.9, or 12.9 for extreme tensile limits. Surface anti-rust coatings are available in Plain/Oiled, Black Oxide, Hot-Dip Galvanized (HDG), or Dacromet.

4. Strict Global Regulatory Standards

Our production lines match strict industry benchmarks, including GOST 11530-76 / 11530-93, alongside DIN, ISO, AREMA, and BS standards.

The Complete M22 & M24 Product Matrix

Frequently Asked Questions (FAQ)

Q: What is the main difference between an M24x150 and an M24x160 joint bolt?
A: The bolt length. M24x150 bolts are standard for typical mainline fishplates, while M24x160 bolts provide an extra 10mm of length needed for thicker, insulated rail joints or severe turnout (switch) sections.

Q: Why do rail joint bolts feature an oval or diamond neck under the head?
A: It acts as an anti-rotation mechanism. The neck locks into matching elongated slot holes in the fishplate, preventing the bolt from spinning when torque is applied to the nut.

Q: What steel grades are recommended for heavy-duty track bolts?
A: Grades 8.8, 10.9, and 12.9 high-strength steel are highly recommended. These undergo quenching and tempering to withstand massive dynamic wheel loads without shearing.

Q: Which anti-corrosion coating is best for outdoor railway fasteners?
A: Hot-Dip Galvanized (HDG) is excellent for long-term outdoor rust prevention in high humidity. Dacromet offers elite corrosion protection without causing hydrogen embrittlement in high-tensile steel.

Why Source from Signum Rail Fasteners China?

Signum Rail Fasteners China is a world-class railway fasteners factory providing custom solutions tailored to your unique engineering drawings:

· 2-Shift Workforce: Round-the-clock production shifts to deliver high-volume orders in short lead times.

· Strict Quality Control (QC): A high-efficiency QC inspection team monitors every batch to guarantee elite product reliability.

Request a Quick B2B Quote

Looking for a reliable M24x160 joint bolt supplier? Contact Signum Rail Fasteners today to get a rapid, competitive quotation on M22 and M24 rail joint bolts.