For 5/4 decking (1 inch actual thickness) to 2x6 joists, use 2-5/8 inch #10 deck screws. For 2 inch nominal decking (1-1/2 inch actual), use 3-1/8 inch screws. The rule of thumb is the screw should penetrate the joist at least 1-1/2 inch after passing through the decking.

Yes. For modern ACQ or CA pressure-treated lumber, you must use screws specifically rated for pressure-treated wood. Standard galvanized screws will corrode due to the copper compounds in modern PT wood.

For standard decking installed with 2 screws per board end per joist, budget approximately 350 screws per 100 square feet of deck surface for 6-inch wide boards.

#10 deck screws are designed for attaching deck boards to joists, not for structural framing connections. For framing, use structural screws or nails that meet the code requirements for the specific connection type.

Torx drive resists cam-out better than Phillips, especially important for deck screws where high torque is needed to drive flush without counter-sinking excessively into soft decking boards.

Deck screws should be driven just flush with the board surface or very slightly below, with no raised head that would be a trip hazard. A slightly countersunk head is acceptable as it fills with weathering or a deck plug.

Deck screws are designed for attaching decking boards to joists and have a small-head profile optimized for appearance. Structural screws are engineered for load-bearing connections in framing and have higher shear strength ratings.

Hidden fastener systems are preferred for most composite decking brands. If face-screwing composite, use the screw type and size specified by your composite decking manufacturer, as many require specific fasteners to maintain the product warranty.

Yes. For hardwood decking species like ipe, mahogany, or teak, pre-drilling is essential to prevent splitting and bit breakage. Pre-drill with a countersink bit sized for the screw shaft diameter.

Store deck screws in their original sealed bucket or bag in a dry location. Exposure to moisture before installation can cause surface oxidation that interferes with the coating and reduces long-term corrosion resistance.