M5 x 10mm 5-Lobe Pin Countersunk Security Screws - A4 Stainless Steel - Box of 100 5-Lobe Pin Button Head Security Screws, successor to the Resistorx, feature a flat countersunk head and an internal 5-lobe pin socket drive instead of 6 providing a higher level of security. The 5-Lobe Pin security drive offers an improved tamper resistance compared to the more commonly available 6-Lobe Pin drive; as the tooling is more specialised and as a result harder for members of the general public to get hold of. The internal 5-lobe pin drive adds a level of security to these screws, as a standard torx bit & 6-lobe pin cannot be inserted. These security screws must instead be paired with a security drill bit, resulting in a tamper-proof fastening. Click Here to view the installation video.  These 5-Lobe Pin Countersunk Head Security Screws are made from A4 Stainless Steel which provides corrosion and oxidation resistance as well as increased resistance in harsh chemical and outdoor environments. For larger quantities or items not listed, please email and one of our team will provide you with a quotation. M5 x 10mm 5-Lobe Pin Countersunk Security Screws - A4 Stainless Steel - Box of 100