Threaded Expansion Inserts have been designed to give powerful reusable threads in hard plastics as well as thermoset. These have been pressed into the plastic and can be effortlessly expanded when the assembly bolt is tightened. Threaded Expansion Inserts has high resistance to tensile as well as torque loads. It has been exclusively made for full thread engagement. It is made to proffer greater strength to tensile pull loads. This can be also used for specific sort of flanges.