Helical Inserts

Helical inserts are either tang-less or contain a tang, which is a small piece of metal that's used to apply the torque required to insert the helical insert.

ProtoSpace Mfg stocks a variety of tanged helical inserts. Tangless options can be ordered for additional leadtime and cost.

Free running helical inserts have a thread that is smooth and free running.

Locking helical inserts have the same characteristics as free running, but also allow frequent removal and reassembly of screws without appreciable loss of torque and positively secure threaded members against vibration or shock loosening.