Secure thin metal roofing and siding panels to wooden framing in post-frame buildings. These screws have a sharp tip to pierce metal and deep, widely spaced threads to grip wood. They resist pullout, even in high winds or under heavy vibration. The sealing washer keeps out water to prevent leaks.

Length is measured from under the head.

These rust-resistant screws join wood to sheet metal by drilling, tapping, and fastening in one go. Their self-drilling tip clears the way while their threads tap into the material. Made of stainless steel, they also won't degrade from chemically treated wood, such as ACQ-treated (arsenic-free) lumber. The flat head sits flush, so you won't need to worry about snags. The Phillips drive handles enough torque to drive into most kinds of wood without slipping.

Length is measured from the top of the head.

These Torx screws join wood to sheet metal by drilling, tapping, and fastening in one go. Their self-drilling tip clears the way while their threads tap into the material. With a deep six-lobe opening, the Torx drive handles more torque than slotted, Phillips, and hex drives. The flat head deters snags.

Length is measured from the top of the head.