Compatible working materials: Concrete, masonry, and Features: Easy to work with just a pin and secure installation. In addition, just look at the pin to ensure that the hitting is complete. The screw diameter and anchor body diameter are the same, so you can drill holes after installation or anchor without rattling. The SC type is made of all-stainless steel, which is highly resistant to rust. Widely used in damp locations. SC type W screw stainless steel model number Screw diameter (outer diameter) Total length (mm) Thread length (mm) Maximum usable thickness (mm) Pre hole diameter (mm) Embedded depth (mm) Maximum pulling strength (kN) SC-3060 W3/8 60 25 5 10.0 40 17.5 SC-4070 W1/2 70 25 13.5 45 19.6