Self-tapping screw with a semi-concealed head is a popular universal and multifunctional fastening product, which is made in accordance with the requirements of DIN 7983. It has a full thread, semi-concealed head.
Applications sheet metal screw connections in sanitary and heating structures, are also used in wet areas, on the street, including the industrial area near the sea.
Material stainless steel. The grade of steel A4 allows to use fastenings at considerable differences of temperature and in the aggressive and humid environment.
The sheet of screwed metal parts should be a larger pitch of the thread selected from the screw.