Insert Nut For Plastic

Install these insert nut into plastic parts to create a secure base for fasteners. Unlike plastic threads, which wear down with repeated use, these thread insert nut hold their shape over a long life. Press insert nut into straight holes that have been drilled, printed, or molded into plastic parts, then heat them with a soldering tip to melt the surrounding plastic. As the plastic cools, it fuses to the sharp, diagonal ridges around the inserts, which withstand torque and prevent the inserts from being pulled out. The interior is fully threaded, so you can access the threads from both sides of a through-hole.

Made with lead, brass insert nut are stronger than aluminum and other brass alloys but not as strong as 18-8 stainless steel inserts. They have good corrosion resistance.

Aluminum insert nuts are one-third the weight of brass and stainless steel inserts, have good corrosion resistance in wet environments, and are lead-free. Since they're lead-free, they can be safely recycled. 

18-8 stainless steel inserts are stronger than brass and aluminum inserts, have excellent corrosion resistance, and are lead-free.