![]() ![]() The diameter of the drill bit for installing 3/16 Tapcon Screws should be 5/32 inches. The drill bit must be carbide-tipped and used with a hammer drill set in hammer & rotation mode. A 5/32 inch bit is used for 3/16 inch Tapcons, and a 3/16. The drill bits for installing the Tapcon Screw must comply with ANSI B212.15-1994 standards. tapcons can take either a screw driver or a socket interface. drill the holes, going through the plate and into the floor with the correct size masonry drill bit. The metric drill measurements and the US drill measurements also matter because you might find a drill with both measurements, or you might. (oh, and I'm sure this is obvious, but just in case. As you can see by the chart, there are many different sizes of 10mm taps and the exact size depends on the drill bit you should use. Momentum, proper sized pilot hole, and cleaned out hole are the keys in my experience. If you stop, back it out, and take another run at it. ![]() you can't stop for even a second with tapcons, you need to drive them with power until they're seated fully. Variations in the drill bit size can affect the efficiency of the screw’s installation and the strength of its hold. These bits cannot be used with SDS-Max-drive rotary. The SDS-Plus shank has two deep slots and two shallow slots for use with SDS-Plus-drive rotary hammers. Each bit is precisely sized to match the tolerances necessary to achieve maximum holding strength from tapping screws. This size ensures a snug fit for the screw, allowing it to grip the masonry effectively and provide optimum holding power. SDS-Plus-Shank Masonry Drill Bits for Tapping Screw Installation. And in reality, with hundreds (thousands) of pounds on an interconnected structure, where's it gonna go?Įdit: But if you are set on using tapcons, the above poster (Roger) is right. When determining the best size of a bit for tapcon screw, there are two dimensions that need to be determined: the diameter of the bit required and the length of the bit. The ideal drill bit size for a 5/16 Tapcon is generally a 1/4 bit. This is how I would do it at my own shop actually - if ever the floor needs to be pulled up, the concrete is in good shape still. Practically, you may not be able to measure the drill bit diameter more than 2 decimal places. You can check fraction and decimal conversion using the below table. With a little liquid nails underneath, and considering that weight + gravity = a pretty not-wanting-to-move surface to begin with, this has held fast for me.Īlso, I've seen many instances of wood floor install where sleepers are not fastened down with anything other than liquid nails. When you need to convert mm to inches, you have to multiply the mm value by 0.0393701. NOTE: Concrete screws are susceptible to galvanic corrosion when used with aluminum, or when used in environments where moisture may be present. I used a ramset to fasten various things to the floor in my shop (such as bottom plate on walls, stairs footer etc.). Using the incorrect masonry drill bit will affect performance, and could lead to failure. ![]()
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