Torx Plus Rounded Head Thread-Forming Screws

Neither moisture nor a heavy hand can damage these screws. The deep, six-lobe recess withstands even more torque than a Torx drive to prevent slipping as you install screws in plastic. They press threads into molded or cast holes and won’t crack or distort the material. Use them to fasten plastic components, enclosures, and panels. The rounded head creates a finished look.

Length is measured from under the head.

18-8 Stainless Steel—The choice for wet and outdoor environments, these screws resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Tri-Lobe—The tri-lobular shank forms threads in thermoplastics such as polypropylene and ABS. These screws displace material to create a tight fit that resists vibration and prevents backing out. Because the shank isn't round, the diameter will vary slightly depending on where you measure it. They're comparable to Plastite screws.