What is a wire thread insert?

Wire thread insert is an internally threaded fastener. It is a spiral coil precisely processed from cold-rolled diamond-shaped stainless steel wire with high strength, high precision and smooth surface. It is a high-precision internal and external thread concentric body. After the wire screw is assembled, a high-precision internal thread that meets international standards is formed, and its performance is superior to the internal thread formed by directly tapping the wire.

Wire Thread Inserts are sometimes also called helical inserts, helically wound inserts, Recoils or Helicoils.

After the wire thread insert is installed, the threaded hole tolerance zone depends on the wire thread insert surface manufacturing tolerance and the wire thread insert mounting hole thread tolerance zone; the thread tolerance of the mounting hole mainly depends on the tapping accuracy of the wire thread insert mounting hole, which usually forms Grade 6H, when the precision is high, it can reach the tolerance zone of grade 5H and 4H; the unified thread standard is 2B and 3B. The user of wire thread inserts can choose special taps, tapping methods (hand tapping, machine tapping) and lubrication methods according to the required tolerance zone to ensure that the accuracy and any usage requirements you require are achieved.