Tail-drilled Bolts
Specifications
- Common diameters range from M6 to M30, with various other sizes available.
- Length options vary based on application, ranging from dozens of millimeters to several hundred millimeters.
- Thread forms include coarse threads and fine threads.
- Coarse threads are suitable for general connections.
- Fine threads are used for applications requiring higher precision and anti-loosening performance.
- The tail hole diameter is typically one-third to one-half of the bolt diameter.
- The tail hole depth is generally 1 to 2 times the bolt diameter.
What are Tail-drilled Bolts
Tail-drilled bolts are a type of bolt with a special structure. Holes are processed at the tail of the bolt, and the existence of these holes endows the bolts with unique functions and application advantages.
Manufacturing Process of Tail-drilled Bolts
- The basic shape of the bolt is initially formed through forging or cold heading processes.
- Holes are drilled at the tail using mechanical processing methods.
- High-precision tail-drilled bolts may require heat treatment to improve strength and toughness.
- Surface treatments such as galvanizing and nickel plating are applied to enhance corrosion resistance.
Selection Principles of Tail-drilled Bolts
- Select the appropriate material based on the usage environment.
- Use stainless steel tail-drilled bolts in humid environments to prevent rusting.
- Choose bolts with suitable specifications to meet strength requirements for tensile and shear forces.
- Consider installation space and operational convenience.
- In narrow spaces, select bolts with appropriate tail hole positions and sizes for easy tool insertion and operation.
