Choosing the right masonry drill bit size for concrete, brick or stone matters a lot. The masonry drill bits come in many sizes and wrong choice can create troubles with anchors, screws or wall plugs
Masonry drill bits measure according to various systems, as fractional, metric, wire gauge number and letters. Typical diameters are 1/4 inch, 3/8 inch and 1/2 inch. For metric concrete drill bits commonly present 8mm, 10mm, 12mm, 14mm, 16mm, 17mm, 18mm, 20mm, 22mm, 25mm, 28mm, 30mm, 32mm, 35mm, 38mm, 40mm, 45mm and 50mm.
How to Choose the Right Masonry Drill Bit for Concrete, Brick and Stone
They range from 3mm until 16mm according to the kind.
High-quality penetrator drill bits are available from 3/16 inch until 1-1/4 inch, with length of 18 inches. Some have a stop ring, that inhibits too deep penietration in concrete.
Using masonry drill bit of same size as the anchor diameter is usual. Hole depth do about 6mm or 1/4 inch more than the anchor length. 3/16 masonry bit commonly help to mount on brick, well for anchors and tapcons.
For number 8 anchor yet quarter-inch bit answers most. 5/32 inch masonry bit well operate with 3/16 inch tapcons. After drilling clean the hole well.
Masonry drill bits are a bit oversized. 7/32 inch bit in wood answers for quarter-inch plastic anchor. If 9/32 masonry drill bit must be used, diamond wheel can sharpen the peak and edges to precise size.
Metric 16mm matches almost 5/8 inch, 12mm falls between 15/32 and 1/2 inch. Buy directly 12mm bit commonly best approach.
Masonry drill bits have sharp head from hardened metal. Rather than wood bits, concrete bits do not have central sharp spine. Boring happens slowly.
Too fast speed or pushing down heats the bits and will taint them. When the drill goes deeper, extract it to remove waste. Carbide-tipped drill bits have strong tips, that ensures precise holes in concrete and masonry.
The carbide absorb heat well, so they can twist more quickly.
The 1/2 inch mark on drill points to chuck size, so how thick bits fit. Cheap drills have 1/2 or 5/8 inch chucks, while many home non-hammer drills use 3/8 inch. Because of diameters above 1/4 inch hammer drill are better.
1/4 inch bit occasionally suffices for masonry drill bit in impact driver. Start with little as 1/8 inch to avoid splits, later pass to 1/4 inch. Well drill deeply before puttingin the bolt.
