Tamper proof, or tamper-resistant screws provide an added level of protection against vandalism, theft or other tampering threats with a drive design that prevents removal with ordinary screw drivers. Security screws are available in sheet metal, self-drilling or machine screw threads. Choose from a variety of drive styles including Spanner, Pin Head and Socket Pin Head, Torx, Opsit Reverse Thread and Tri-Wing, also known as triangular recess. Stainless steel security screws are most commonly manufactured; however, AFT also offers a few brass security screws with machine threads.
Tamper-Resistant Screw Drive Styles
Snake Eyes SpannersThe original Snake Eyes® Spanner requires matching drive bit reducing the chances of unauthorized removal. Available in 18-8 stainless steel in a wide range of sizes and head styles. Some machine screws available in brass.
Traditional Phillips drive with tamper-resistant pin added for security. Easy to drive & remove with matching tool. (Cannot be removed with Phillips Screwdriver.) Available in machine & sheet metal screws with flat or pan head design.
Engineered for a high degree of tamper-resistance offering positive engaging, high torque transmission while resisting cam-out and tool wear. Available in button & flat head design or set screws (special order). Matching drive bit required for installation and removal.
Popular design installs with standard screwdriver. Reverse side cammed out to prevent unauthorized removal. Machine and sheet metal screws available in round, truss or oval head designs.
Maximum torque transfer & positive tool engagement means easier drive installation with less pressure & slippage. Torx® Pin-Head offers a high degree of security & requires matching drive bit. Available in Button & Flat-Head machine screws & Button, Flat & Pan-head design sheet metal screws.
Economical Tri-Wing® tamper-resistant screws are the common choice for high volume assembly operations while offering a minimal degree of security. Machine & sheet metal screws are offered in a Pan-Head design and Opsit® reverse thread.
New trilobular drive offers a high degree of security requiring matching tool bit.
Opsit Reverse Thread
Opsit® is a reverse thread sheet metal screw that installs counter-clockwise, thus, tightens if removal is attempted. Available with a low profile truss head and Tri-Wing® drive.
Tamper-Resistant Screw Head Styles
In addition to innovative drive styles, tamper-proof screws are designed with specialized head styles that add either to the appearance of the screw when installed or to the security value of the screw. With a range of head styles, you are sure to find the perfect tamper-resistant screw for your project.
Pan Head Security Screws
The low-profile of pan head security screws offers added strength due to its high-edged crown and large diameter head that spreads the bearing load across a broad surface area.
Truss Head Security Screws
Truss head tamper-resistant screws offer added protection against vice-grip removal due their low-profile, sloped head design. The large diameter of the truss head lends additional strength to the fastener.
Oval Head Security Screws
Gently-rounded oval heads can be used in countersunk applications. The unique head style offers a deep recess but slightly protrudes from the surface so as to be visible.
Flat Head Security Screws
Flat tamper-proof security screws can be countersunk into soft materials or driven flush with metal surface materials. They offer a clean, uncluttered appearance.
Round Head Security Screws
The most commonly used head style for general purpose applications, round head security screws feature a high crown with a deep recess. Its head diameter is smaller than both the pan and truss head screws.
Button Head Security Screws
With a low-profile, and therefore a shallow recess, button head screws are suitable for general purpose applications.
Tamper-resistant security screws must be installed and removed with special tools designed to coordinate with each drive style. Browse our Security Tools & Kits for the correct matching tools required. Our knowledgeable sales team is here to help with any questions or if you need to request a quote for custom plating on your security screw order.