Features 1、CORROSION RESISTANT 410 STAINLESS STEEL: 410 stainless steel has high strength and hardness grades to resist corrosion in mild environments 2、SECURE MATERIAL WITH SCREWS: Use self drilling screws to secure material to aluminum or metal sheets, saving time and money without pilot holes on the end of the drill 3、DRILL EASILY: Countersunk stainless steel self drilling screws easily drill into flat head materials flush with the mounting surface 4、EASILY LOCK WITHOUT SLIP: Cross groove drive bring uniform force, easy to lock, not easy to slip, convenient and quick to use 5、WIDE APPLICATIONS: Self drilling screw is widely used in manufacturing, construction, engineering, assembly and other industries Specification Item Type: Self Drilling Screw Material: 410 stainless steel Product Size Specification: Nominal Length: Approx. 19mm / 0.75in Package List 200 x Self Drilling Screw