Security 2 hole Csk self tappers ab type thread are available in zinc or stainless steel The two Hole Security Screw as its name states has 2 holes in the head, requiring a special insert bit to insert and remove. This unique feature renders the 2 Hole Screw tamper proof, reducing the risk of vandals or intruders tampering or undoing the screws. Due to the design of the 2 Hole Security Screw it is suitable for low to medium torque applications and is ‘2 way’
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