What kind of screws should you use for your woodworking project? Learn how to choose the best wood screw. From heads to drives, points to threads, platings to coatings, we give you a thorough education. Lag screws (US) or coach screws (UK, Australia, and New Zealand) (also referred to as lag bolts or coach bolts, although this is a misnomer) are large wood screws .Square-headed and hex-headed lag screws are covered by ASME B18.2.1 standards, and the head is typically an external hex. A typical lag screw can range in diameter from 1 ⁄ 4 in (6.35 mm) to 1 1 ⁄ 4 in (31.75 mm), Make the most of you of your outdoor project with Deck Mate brand exterior screws . Designed for use with all treated lumber and all exterior projects to connect wood to wood . A lifetime polymer coating

Drywall screws vs. other types of wood screws . From time to time, people criticize me for using drywall screws in so many of my projects. But I really like drywall screws … Alternating high and low threads minimize driving torque and allow the screw to hold more material between threads for a stronger hold and better strip-resistance than standard drywall screws for wood . Also known as Tap-Flex screws , these are made from hardened steel hererate hard material. They have a five-edged shank that presses tightly against the material to form threads and resist loosening.

Use 210 lumber for the planter box. Cut the slats at the right dimensions and then lock them together tightly with 2 1/2″ screws . Drill pilot holes before inserting the screws to prevent the wood from splitting. 1-1/2 in. Wood Screw fasteners are used on bare galvalume roof and wall panels. Four sealing point design ensures a perfect seal. Fasteners have self-tapping points so no pre-drilling is required. BEST ANSWER: You will need to go to the manufacturer: L m metal products web site and click on contact to ask them. They do not specifically say on their web site. Just say you can use with heavy mirrors etc.very vague. They are sturdy and should hold at least 25 pounds each if mounted to solid wood .

3 – 22 @ 8 feet long 1 – 23 @ 8 feet long 1/2″ thick solid wood or plywood for seat 2 1/2″ screws wood glue finishing supplies