The thin head reduces surface damage and leaves a smooth, near-invisible finish on decking and trim. These screws are also known as trim head screws. With a deep six-lobe opening, their Torx drive handles more torque than slotted, Phillips, and hex drives. The flat head creates a discreet look in countersunk holes and deters snags.

Drill a pilot hole slightly smaller than the screw to prevent splitting. Length is measured from the top of the head.

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.

Deep, sharp, and widely spaced threads cut into workpieces without splitting them, while the head sits flush to prevent snags. These domed-head screws are often used on particleboard, medium-density fiberboard (MDF), and hardboard such as Masonite. The Phillips drive handles enough torque to drive into most kinds of wood without slipping.

Length is measured from under the head.

Fasten decking and fencing outdoors with screws that won't rust. They're often used with chemically treated wood, such as ACQ-treated (arsenic-free) lumber. Also known as deck screws, their trumpet shape spreads pressure to prevent splitting, while the flat head limits snags. The square drive handles more torque than slotted and Phillips drives.

The screw drill tip acts as a built-in pilot, though pilot holes are still recommended near edges to avoid splitting. Length is measured from the top of the head.

Fasten plywood and oriented strand board your way with these rust-resistant screws. They have a combination drive, so you can use Phillips drivers to tighten them or square drivers if you need more torque. The flat head sits flush to prevent snags, while serrated threads cut through wood fibers to minimize splitting. Often used in exterior panels, they won't degrade from moisture or chemically treated wood.

Length is measured from under the head.

These Phillips flat head screws sit flush, have a shiny look, and won't rust in wet environments. The Phillips drive handles enough torque to drive into most kinds of wood without slipping.

Drill a pilot hole slightly smaller than the screw to prevent splitting. Length is measured from the top of the head.

Ribs under the head act as a brake to prevent over-tightening and damaging threads. A sharp point penetrates wood and sheet metal, and alternating high and low threads minimize driving torque. These screws are made from steel and have a coating that resists up to 500 hours of salt spray.