SERPLAST TR Expansion Insert Technology
The SERPLAST TR Insert features an insertion by expansion design with a built-in self break-effect, providing a strong and reliable threaded connection in thermoplastic materials. Once installed, the insert expands during screw tightening, creating a secure fixing while helping to resist loosening of the mating fastener.
Designed specifically for thermoplastics, SERPLAST TR inserts are installed into moulded or drilled holes after production. The insert is positioned using simple pressure, making installation quick, efficient, and suitable for both prototype and production applications.
Advantages
- Offers a strong, wear-resistant thread in plastic materials
- High resistance to pull-out forces
- Excellent torque resistance
- Installation after moulding
- Simple pressure-fit installation
- No powered tooling required for manual installation
- Reusable metal thread for repeated assembly and disassembly
- Self break-effect helps resist screw loosening
- Suitable for a wide range of thermoplastic materials
Materials and Finishes
SERPLAST TR inserts are manufactured from high-quality brass materials:
- CuZn40Pb3
- CuZn39Pb3
- CuZn36Pb3
For specialist applications, inserts can also be supplied with:
- Tin plating
- Nickel plating
- Zinc plating
Installation Method
SERPLAST inserts are installed into holes created during moulding or by drilling.
- The insert is placed into the prepared hole.
- The insert is retained by simple pressure.
- During screw tightening, the insert expands within the plastic material.
- Expansion creates a secure mechanical fixing and produces the self break-effect on the screw.
Manual Installation Tool Recommendation
For improved alignment and installation consistency, we recommend the SER 1 Manual Installation Tool.
This tool helps guide the SERPLAST insert during installation and is especially suitable for small production runs and maintenance work.
Installation using SER 1:
- Position the SERPLAST insert over the prepared hole.
- Insert the centering nipple of the tool into the insert thread.
- Apply a light hammer strike to the top of the tool.
- The insert penetrates the plastic and seats correctly within the component.
The SER 1 tool enables more accurate centering and improved installation quality while maintaining a simple, low-cost installation process.
SERPLAST Product Range
-
TR – Designed for thermoplastics
-
DM – Designed for duroplastics
-
C – Suitable for thermoplastics and duroplastics
-
CM – Suitable for thermoplastics and duroplastics
Key SEO Features
- Insertion by Expansion
- Self Break-Effect
- SERPLAST TR Design
- Thermoplastic Insert
- High Pull-Out Resistance
- High Torque Resistance
- Brass Threaded Insert
- Reusable Plastic Thread
- Manual Installation
- Compatible with SER 1 Installation Tool
- CuZn40Pb3 Brass Insert
- Heat Set Plastic Insert
- Ultrasonic Plastic Insert
