Drill Bit Decimal Size Equivalents
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About Drill Bits
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About Masonry Drill Bits
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Round- and Hex-Shank Masonry Drill Bits for Hammer Drills
Standard Point
Serrated Point
Drill holes using simultaneous rotary and hammering action to break masonry material into tiny granules. These bits drill faster and penetrate materials with less pressure than rotary-only bits. Also known as percussion or impact bits.
Serrated-point drill bits deliver faster, cooler cutting as well as longer life than standard-point masonry drill bits.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
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Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Specifications Met | For Use On | Each | |
Inch—Standard Point | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
1/8" | 0.125" | 3" | 1.38" | Round | 1/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
1/8" | 0.125" | 6" | 4" | Round | 1/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
5/32" | 0.1563" | 3" | 1.38" | Round | 5/32" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
5/32" | 0.1563" | 6" | 4" | Round | 5/32" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
11/64" | 0.1718" | 3" | 1.38" | Round | 5/32" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
3/16" | 0.1875" | 4" | 1.5" | Hex | 11/64" | ANSI B212.15 | Masonry, Concrete | 000000 | 0000 |
3/16" | 0.1875" | 6" | 3.88" | Hex | 11/64" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
3/16" | 0.1875" | 8" | 6" | Hex | 11/64" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
7/32" | 0.2188" | 6" | 4" | Hex | 3/16" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
1/4" | 0.25" | 4" | 2" | Hex | 15/64" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
1/4" | 0.25" | 6" | 4" | Hex | 15/64" | ANSI B212.15 | Masonry, Concrete | 000000 | 0000 |
1/4" | 0.25" | 13 1/2" | 12" | Hex | 15/64" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
9/32" | 0.2813" | 4" | 2" | Hex | 1/4" | ANSI B212.15 | Masonry, Concrete | 000000 | 0000 |
5/16" | 0.3125" | 4" | 2" | Hex | 9/32" | ANSI B212.15 | Masonry, Concrete | 000000 | 0000 |
5/16" | 0.3125" | 6" | 4" | Hex | 9/32" | ANSI B212.15 | Masonry, Concrete | 000000 | 0000 |
5/16" | 0.3125" | 13 1/2" | 12" | Hex | 9/32" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
3/8" | 0.375" | 4" | 2" | Hex | 11/32" | ANSI B212.15 | Masonry, Concrete | 000000 | 0000 |
3/8" | 0.375" | 6" | 4" | Hex | 11/32" | ANSI B212.15 | Masonry, Concrete | 000000 | 0000 |
3/8" | 0.375" | 12" | 10" | Hex | 3/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
3/8" | 0.375" | 13 1/2" | 12" | Hex | 11/32" | ANSI B212.15 | Masonry, Concrete | 000000 | 00000 |
3/8" | 0.375" | 18" | 16" | Hex | 11/32" | ANSI B212.15 | Masonry, Concrete | 000000 | 00000 |
7/16" | 0.4375" | 6" | 4" | Hex | 3/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
1/2" | 0.5" | 4" | 2" | Hex | 3/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
1/2" | 0.5" | 6" | 4" | Hex | 3/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
1/2" | 0.5" | 13 1/2" | 12" | Hex | 3/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
1/2" | 0.5" | 18" | 16" | Hex | 3/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
9/16" | 0.5625" | 6" | 4" | Hex | 3/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
9/16" | 0.5625" | 13 1/2" | 12" | Hex | 3/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
5/8" | 0.625" | 6" | 4" | Hex | 3/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
5/8" | 0.625" | 13 1/2" | 12" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
5/8" | 0.625" | 18" | 16" | Hex | 3/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
11/16" | 0.6875" | 6" | 4" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
11/16" | 0.6875" | 13 1/2" | 12" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
3/4" | 0.75" | 6" | 4" | Hex | 3/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
3/4" | 0.75" | 13 1/2" | 12" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
3/4" | 0.75" | 18" | 16" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
7/8" | 0.875" | 6" | 4" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
7/8" | 0.875" | 13 1/2" | 12" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
7/8" | 0.875" | 18" | 16" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
1" | 1" | 6" | 4" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
1" | 1" | 13 1/2" | 12" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
1" | 1" | 18" | 16" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
1 1/8" | 1.125" | 6" | 4" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
1 1/8" | 1.125" | 13 1/2" | 12" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
1 1/8" | 1.125" | 18" | 16" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
1 1/4" | 1.25" | 6" | 4" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
1 3/8" | 1.375" | 6" | 4" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
1 1/2" | 1.5" | 6" | 4" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
Inch—Serrated Point | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
1/8" | 0.125" | 3" | 1.88" | Round | 1/8" | ANSI B212.15 | Masonry, Concrete | 00000000 | 0000 |
3/16" | 0.1875" | 4" | 2.38" | Round | 3/16" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
3/16" | 0.1875" | 6" | 4.5" | Round | 3/16" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
3/16" | 0.1875" | 8" | 6" | Round | 3/16" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
1/4" | 0.25" | 4" | 2.25" | Round | 1/4" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
1/4" | 0.25" | 6" | 3.75" | Round | 1/4" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000 |
1/4" | 0.25" | 8" | 6" | Round | 1/4" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
5/16" | 0.3125" | 4 1/4" | 2.5" | Round | 1/4" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
5/16" | 0.3125" | 6" | 4" | Round | 1/4" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
3/8" | 0.375" | 6" | 4" | Round | 3/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
7/16" | 0.4375" | 6" | 4" | Round | 3/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
1/2" | 0.5" | 6" | 4" | Round | 3/8" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
5/8" | 0.625" | 6" | 4" | Round | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
11/16" | 0.6875" | 6" | 4" | Round | 1/2" | ANSI B212.15 | Masonry, Concrete | 00000000 | 00000 |
3/4" | 0.75" | 6" | 4" | Round | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
7/8" | 0.875" | 6" | 4" | Round | 1/2" | ANSI B212.15 | Masonry, Concrete | 00000000 | 00000 |
1" | 1" | 6" | 4" | Round | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |