What size drill bit for trailer deck screws?

What size drill bit for trailer deck screws?

The bit size for pre-drilling should be the same diameter as the inside diameter of the screw threads – for 1/4″ x 20 TPI deck screws, we recommend a 7/32″ (0.2188″) drill bit, for 5/16″ x 18 TPI deck screws, we recommend a 9/32″ (0.2812″) drill bit.

What size Torx are deck screws?

These coated screws are #10 size and are 3-1/2″ in length with a type 17 tip. The type 17 tip is a thread cutting screw for wood with an auger style point that helps clear chips and reduce splitting.

What is a floorboard screw?

Floor board screws are specially designed for installing wood floors into truck trailers. Six-Lobe Recess Flat Heads (Floorboard) Self Tapping Thread Cutting Screws – Measure length from the top of the head to the tip. Black Phosphate and Oil Finish.

What’s the diameter of a #10 screw?

4.8mm
10-32 screws have a diameter of 3/16″ (4.8mm) where as 12-24 screws have a diameter of 7/32″ (5.6mm). M6 threads are 6mm in diameter, only .

What screws to use on floorboards?

Put the new board into position and secure it with 50mm of cut floor brads or ring-shanked nails, taking care to avoid existing holes in the joists. Then drill pilot holes for the nails, which stop any splitting. You could use 50mm countersunk screws (4mm or 5mm gauge) instead.

What screws to use on subfloor?

Most construction experts use 3-inch steel screws for plywood subfloors. To find out which length of screw you’ll need, you first have to know how thick the flooring is. You’ll want the screw to go about an inch past the plywood into the joist or underlying layer beneath it.

Do you have to screw decking into every joist?

Each deck board should be fastened with two screws at each point where the board crosses a joist to ensure the stability and durability of your deck’s surface. Boards should be fastened to rim joists with three screws.