Structure screw with cylindrical head has perfect contersunk and appleaing invisible appreance! 

Application: Wood、Chipboard、Composite、Ceiling
Size: M5 - M10、#12 - 3/8 
Length: 40mm - 400mm、1 1/2" - 15 3/4"

We can provide a customized service, including a variety of head, head recess, thread, point styles and surface treatment types, to solve you problems.