Self-tapping screws pan head one way recess

Security screws, commonly known as “one-way” screws, are specifically designed to prevent tampering in the applications where they are installed.
Their tamper-proof feature is ensured by the special head design and their high mechanical strength, which makes unscrewing impossible unless a special removal tool is used.
One-way screws are therefore ideal for permanent fastening applications and for the prevention of theft.