Joint Bolt M22x115

In modern railway infrastructure, the M22x115 rail joint bolt (frequently called a fish bolt or track bolt) serves as a critical heavy-duty fastener. Its primary function is to secure the joint bars—or fishplates—that link two sections of rail track together. By tightly locking these components, it ensures precise track alignment, continuous load transfer, and overall transit safety.

Technical Specifications & Application Details

1. Primary Railway Applications

The M22x115 joint bolt is engineered specifically to fasten fishplates on R-33 type rails. It is a staple component found across:

· Industrial railway networks and siding tracks

· Lightweight transit and station tracks

· Heavy-duty overhead crane rails

2. Complete Fastening Assembly

To withstand severe structural vibrations from passing trains, these fasteners are typically supplied as a 3-part or 4-part track bolt assembly. This setup includes:

· The M22 high-tensile bolt

· A matching heavy hex nut

· A premium spring lock washer to prevent back-off and loosening

3. Advanced Head & Neck Design

To streamline installation and maintenance, these track bolts feature an innovative geometric design under the head. An oval neck (elliptic neck) or diamond neck profile locks securely into the pre-slotted holes of the rail fishplate. This mechanism completely prevents the bolt from spinning when being torqued down from the nut side.

4. Material Integrity & Metallurgical Strength

Heavy-wheel impacts and thermal expansion forces demand extreme durability. These railway fasteners are manufactured using high-strength carbon steel or structural alloy steel. They undergo a rigorous heat-treatment quenching process to achieve optimal tensile strength, allowing them to absorb violent dynamic forces effortlessly.

5. Global Railway Standard Compliance

Manufacturing precision follows strict global engineering standards to guarantee universal compatibility. Production lines typically adhere to:

· GOST 11530-93 (Standard for track bolts)

· DIN / ISO international fastener standards

· Custom regional railway network specifications

Why Choose Signum Rail Fasteners China?

As a leading railway fasteners factory, Signum Rail Fasteners China manufactures premium-grade, custom rail joint bolts tailored exactly to your unique engineering drawings and project requirements.

High-Capacity B2B Manufacturing

· 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 track bolt supplier for your next infrastructure project? Contact Signum Rail Fasteners today to get a rapid, competitive quotation on M22x115 rail joint bolts.