M4 x 10mm 2-Hole Countersunk Security Screws - A2 Stainless Steel 2-Hole Countersunk Security Screws, also known as Snake Eye® or Pig Nose, feature a flat countersunk head and a popular aesthetically pleasing 2 hole internal drive. The Snake Eye® drive has 2 holes drilled into the head which requires a 2-pin matching driver to install and remove it. The two hole drive is designed for medium torque applications. The internal pig nose drive adds a level of security to these screws, as a standard drill bit 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 2-Hole Countersunk Security Screws are made from A2 Stainless Steel which provides corrosion and oxidation resistance. For larger quantities or items not listed, please email and one of our team will provide you with a quotation. M4 x 10mm 2-Hole Countersunk Security Screws - A2 Stainless Steel