Threaded Heat Set Inserts
We take an M5 brass heat set insert in ABS plastic (8 mm hole depth) as an example. We follow UL 746C for testing. The axial pull-out force is ≥600 N. The torque-out force is ≥3.5 N·m. This is much higher than a self-tapping screw in plastic. It can handle 10 or more tightening cycles.
Make Threads in Plastic with Our Heat Set Inserts
Do you need a thread inside a plastic housing? A self-tapping screw strips after a few turns. Our Threaded Heat Set Inserts are made for plastic parts. The outer wall has knurling or serrations. You heat the insert or use ultrasound. You push it into the plastic housing. The plastic melts and hardens again. It holds the insert tight. We are a Shanghai factory. We have made fasteners for 20 years.
Check Our Pull-out Data and Material Choices
We take an M5 brass heat set insert in ABS plastic (8 mm hole depth) as an example. We follow UL 746C for testing. The axial pull-out force is ≥600 N. The torque-out force is ≥3.5 N·m. This is much higher than a self-tapping screw in plastic. It can handle 10 or more tightening cycles. The size range is M1 to M20. We offer stainless steel SUS304, copper, and brass H59 or H62. Copper and brass have very good heat transfer. The conductivity is about 380-400 W/m·K. Heat goes into the plastic fast. This gives the best melt bond. The outer wall has straight, cross, or spiral knurling. The tooth depth is 0.2-0.4 mm. Thread precision is 6H. The insert comes clean with no oil. This helps the melt bond. You can install with heat, ultrasound, or injection molding. The insert works for ABS, PC, PA (nylon), and PBT. PP is tricky. Crystalline plastics do not bond as well.
|
Parameter |
Standard / Value |
|
Pull-out Force (M5 in ABS) |
≥ 600 N (UL 746C) |
|
Torque-out Force (M5 in ABS) |
≥ 3.5 N·m |
|
Knurling Depth |
0.2 - 0.4 mm |
|
Heat Conductivity (Brass) |
380-400 W/m·K |
Why Our R&D and Sample Policy Support You
We have our own R&D team. You can share your special needs. We will help solve your technical problems. Free samples are ready for stock items. We support OEM and ODM orders. Just send us your drawing or sample. Cold headed parts start at 50,000 pieces. Machined parts depend on the size. Mass production takes 2-3 weeks for standard parts. Custom products take 4 weeks. Repeat orders are even faster. Payment is 30% deposit and 70% balance. We take US dollars. These inserts let you make strong threads in plastic parts.
The entire product line is fully customizable.
Hot Tags: threaded heat set inserts, China threaded heat set inserts manufacturers, suppliers, factory
