12/30/2023 0 Comments 3 16th drill bit![]() (And much more when you factor in different types of bits). In fact, most nice sets include anywhere from 12-30 pieces of standard drill bit sizes. Thankfully, we can narrow it down a a lot to some standard sized holes for bolts and screws as well as for bits.įor example, let’s look at the most common applications:Įveryday home repair and construction projects, hobby, marine, farming, woodworking, metal working, aircraft, arts and crafts, commercial building projects, machinery and more.įor each particular application area, you’re going to just see a few dozen or so relevant drill bit sizes. ![]() Well, if you base your answer on how many size holes there are in the world, then there would be infinite amount of bits! ![]() If you were to look at the most all encompassing collection of multi-purpose, twist-type bits, how many drill bit sizes would there be? How Many Drill Bit Sizes Are There?įirst things first. Scroll down if you just need a quick reference using our drill chart. We’ll discuss these in detail in this article. Many times, we’re just trying to find out the alternative sizes available if you’re working with metric sizes (measured in millimeters) versus standard or empirical values (our familiar fractional inch variety).Ĭheck out our full drill chart below for a quick reference to find all drill size equivalents.įinally, getting the right size drill bit set in your greater tool “chest” will arm you for the various types of projects you’re doing. It may not be totally evident at first glance. Knowing just what size you need to use for the hole you’re making is also important. Or click here to buy Tapcon® brand masonry screws.Having the right drill bit sizes on hand for your particular repair or building task is essential for any seasoned carpenter or weekend-DIY’er. Now that you've read on how to install masonry screws, perhaps you'd like to purchase them? Click here for masonry screws from CONFAST®. The flat countersunk requires a #2 Phillips driver for the 3/16” diameter and a #3 Phillips driver for the 1/4” diameter. The hex headed masonry screw requires a 1/4” driver for the 3/16” diameter screw and a 5/16” driver for the 1/4”. The flat countersunk is measured as an overall length which includes the head and is used where the head is countersunk in the material being fastened. The hex head masonry screws lengths are measured from underneath the head and are used in applications where the head of the screw is above the surface of the material being fastened. Two head styles are available: the hex and flat countersunk. The length of masonry screw must be equal to the thickness of the material being fastened plus a minimum of 1” with a maximum embedment of 1-3/4”. This lead thread can wear down, making it difficult or impossible for the screw to reach minimum embedment depths or depths leading up to the maximum embedment depth of 1-3/4”. The lead thread of the masonry screw cuts threads into the masonry. Attempting to embed a masonry screw deeper than 1-3/4” may cause installation problems, such as having the screw shear off or become stuck in the hole.Īll base materials are different, and the masonry screws installed in concrete may act differently than those installed in brick or cinder block. Less than 1” embedment will decrease the holding values and may provide no holding values at all. The masonry screw must be embedded a minimum of 1” and a maximum of 1-3/4” into the masonry base material. The masonry screw must be installed a minimum distance into the masonry to obtain minimum holding values. The chart below shows the length of the drill bit to use with each length of masonry screw: The length of the bit used should allow the hole to be drilled a minimum of 1/2” deeper than the masonry screw will penetrate the base material. The 1/4” diameter requires the use of a 3/16” carbide tipped bit. ![]() The 3/16” diameter masonry screw requires the use of 5/32” carbide tipped bit for drilling the hole. The carbide tipped bit must meet ANSI standards B212.15-1994 to ensure the correct tolerance between hole size and masonry screw size requirements. The bit that is used in the hammer drill for the masonry screw has a carbide tip. Using a wire brush, vacuum or compressed air will ensure that the hole is clean before installing the masonry screw. Once the hole is drilled, it must be cleaned of all dust and debris. Using a straight rotation drill may create a hole that is not shaped properly and may negatively affect the holding strength of the screw once installed. This will ensure that the hole drilled will have accurate dimensions. The hole in the masonry should be drilled by use of a hammer drill that is set in the hammer and rotation mode. ![]()
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