Smooth Rail Spare Parts Round Head Bolt For Railway And Industrial Fastening

Our round head bolt is a widely used fastening component featuring a smooth, semicircular mushroom head for safe and aesthetic installation. It is widely applied in railway systems, construction, steel structures, machinery and equipment where a flat, non-protruding surface is required.

Manufactured from high-quality carbon steel with strict heat treatment, our round head bolts provide excellent tensile strength, shear resistance and stability under long-term load and vibration. The hot dip galvanized surface ensures outstanding anti-corrosion and anti-rust performance, extending service life in outdoor, humid and harsh working environments.

We produce round head bolts in various standard sizes and also support customized diameters, lengths, thread types and surface treatments to meet different project requirements and international standards such as GB, DIN, BS, AREMA and others. With precise thread processing and stable quality, our bolts are widely trusted by global customers in railway construction, infrastructure and industrial assembly.

• Smooth semicircular round head for safe, scratch-resistant installation
• High-strength carbon steel material for excellent mechanical performance
• Hot dip galvanized surface for superior corrosion resistance
• Precise standard thread for tight fitting and easy assembly
• Good anti-loosening performance under vibration and dynamic load
• Uniform dimensions and stable quality for mass applications
• Available in various standard sizes and customizable specifications
• Suitable for railway fasteners, steel structures, vehicles and machinery

We are an experienced manufacturer of bolts and railway fasteners with complete production lines including forging, threading, heat treatment and hot dip galvanizing, ensuring stable quality and large supply capacity.

Each round head bolt undergoes full inspection from raw material to finished product, including chemical composition analysis, mechanical property test, hardness test and coating thickness test.

We provide customized size, length, thread, material and surface treatment according to your drawings, samples or project standards.

Direct factory supply without middlemen, offering cost-effective prices to help you reduce procurement cost.

Professional export packaging, flexible logistics and complete customs documents to ensure smooth delivery to your destination port.

It is used for general fastening where a smooth, flat, non-sharp head is needed, widely used in railway, construction, machinery and steel structures.

We mainly use high-quality carbon steel Q235 and 45# for high strength and durability.

Yes, hot dip galvanizing is our standard surface treatment for excellent anti-corrosion performance.

Yes, we accept customized diameter, length, thread and material according to your drawings.

We can produce according to GB, DIN, BS, AREMA and other international standards.

MOQ is flexible. Normal production time is 15-30 days.

Yes, free samples are available for quality testing; you only need to bear shipping cost.

Yes, we provide commercial invoice, packing list, certificate of quality and other customs documents.