The IMPA 695731 HELI-SERT STAINLESS STEEL BSF 1/2" LENGTH 19mm is a stainless steel insert that is used to helical-lock two pieces of material together. This product is intended for use in...
The IMPA 695717 HELI-SERT STAINLESS STEEL BSW 1/2" LENGTH 19mm is a stainless steel insert that is used to fasten pipes in a ship's hull. It is designed to resist corrosion and is easy to install.