Track bolts and nuts are very important railway fasteners. The combination of bolts and nuts plays a very important role in connecting rails and fastening rails. Specifically, the combination of track bolts and nuts are generally used for:
1) Connect and fasten the fishplates through their holes to connect the two rails together;
2) As a component of the railway fastening system, it is used to connect and fasten the rail and rail clamp (or rail blade, rail clip) or sleeper plate and sleeper.
They are usually used in pairs, sometimes together with washers or plastic dowels when needed, for the reinforcement of railway tracks. Common types of track bolts and nuts in railway systems include square-head fishtail bolts, cup-head oval-neck fishtail bolts, BHON track bolts, T-bolts, and anchor bolts.
Track bolts and nuts have different applications due to their different functions. Common types are fishtail bolts, rail anchor bolts, turnout bolts, clamp bolts, etc.
1. Fishtail Bolt
The fish bolt is usually used to fix the rail joint, and sometimes the fish bolt can be replaced with the hexagon bolt. Fishtail bolts are mainly used for rail laying and ballasting in the metallurgical industry, coking industry, and steel industry. Models include Φ14×70, Φ16×75, Φ18×90, Φ20×90, Φ22×135, Φ24×135, Φ24×145, Φ24×170, etc. Fishtail bolts are formed by hot pressing or cold heading. Fishtail bolts are made of Q235 or 45# steel or some insulating materials.
2. Rail anchor bolts
Rail anchor bolts, also known as rail compression bolts, are divided into fixed anchor bolts, movable anchor bolts, tie bolts and connecting anchor bolts. According to the shape, there are L-shaped, 9-shaped, U-shaped, welded anchor bolts and embedded bolts for anchor bolts.
Fixed anchor bolts are also called short anchor bolts. Used to fix equipment with less vibration and shock.
Movable anchor bolts are also called long anchor bolts. It is a detachable bolt used to fasten heavy machinery and equipment with high vibration and impact.
Cinch anchor bolts are generally used to fix static equipment.
Rail anchor bolts are used in equipment fastening, steel structure foundation embedded parts, street lights, traffic signs, water pump or boiler installation, etc.
3. Switch bolt
Material: Q235, 45#, 40Cr, 35CrMoA, Q345B, Q345D, 20MnTiB, tb436-77, TB413-75, TB414-75, TB415-75, TB416-75.
Grade: 8, 8.8, 10.9, 12.9
Application areas: construction, machinery, railways, steel, electric power and other fields.
4. T-track bolts
Material: Q235, 45 #
Grade: 4.6, 5.6, 8.8, 10.6, 12.9
Surface: natural color or according to customer requirements
5. Special track bolts
Material: Q235, 35#, 45#
Grade: 4.6, 5.6, 8.8
Surface: plain color, black spray paint or according to customer requirements
6. Tunnel bolts
Type: can be provided according to customer drawings and samples.
Surface: plain (oil) black.zin.HDG etc.
Types: round thread method blue bolts, special curve bolts,
Special pitch spear bolts, etc.