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About Masonry Drill Bits
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Drill Bit Decimal Size Equivalents
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Round-Shank Masonry Drill Bits for Tapping Screw Installation
Each bit is precisely sized to match the tolerances necessary to achieve maximum holding strength from tapping screws. Use with handheld power drills, drill presses, and hammer drills. The shank has a tang which allows it to fit into a drill press with a tapered spindle.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Screw Size  | Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Features | For Use On | Each | |
Inch | |||||||||||
Uncoated Carbide-Tipped Steel | |||||||||||
| 3/16" | 5/32" | 0.1563" | 3 1/2" | 2 1/2" | Round | 5/32" | Standard | Flat on Shank | Masonry, Concrete | 000000000 | 00000 |
| 3/16" | 5/32" | 0.1563" | 4 1/2" | 3 1/2" | Round | 5/32" | Standard | Flat on Shank | Masonry, Concrete | 000000000 | 0000 |
| 3/16" | 5/32" | 0.1563" | 5 1/2" | 4 1/2" | Round | 5/32" | Standard | Flat on Shank | Masonry, Concrete | 000000000 | 0000 |
| 1/4" | 3/16" | 0.1875" | 3 1/2" | 2 1/2" | Round | 5/32" | Standard | Flat on Shank | Masonry, Concrete | 000000000 | 0000 |
| 1/4" | 3/16" | 0.1875" | 4 1/2" | 3 1/2" | Round | 5/32" | Standard | Flat on Shank | Masonry, Concrete | 000000000 | 0000 |
| 1/4" | 3/16" | 0.1875" | 5 1/2" | 4 1/2" | Round | 5/32" | Standard | Flat on Shank | Masonry, Concrete | 000000000 | 0000 |
| 1/4" | 3/16" | 0.1875" | 6 1/2" | 5" | Round | 5/32" | Standard | Flat on Shank | Masonry, Concrete | 000000000 | 0000 |
| 1/4" | 3/16" | 0.1875" | 7 1/2" | 6" | Round | 5/32" | Standard | Flat on Shank | Masonry, Concrete | 000000000 | 0000 |
Chip-Clearing Drill Bits for Wood
An open spiral-flute design clears chips quickly, so these bits can bore smooth, deep holes through construction lumber, railroad ties, and utility poles. Also known as pole or ship auger bits.
Tapered square/round-shank drill bits have a tapered square shank that can be cut off to expose a round shank.
Hex/round-shank drill bits have a hex shank that can be cut off to expose a 1/2" round shank.
Black-oxide and nonstick-coated steel drill bits produce less friction than uncoated steel drill bits.
For technical drawings and 3-D models, click on a part number.
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Shank Size | Point Style | Each | |
Inch—Tapered Square/Round Shank | |||||||
|---|---|---|---|---|---|---|---|
Uncoated Steel | |||||||
| 3/8" | 0.375" | 18" | 12" | 3/8" | Screw | 0000000 | 000000 |
| 1/2" | 0.5" | 18" | 12" | 3/8" | Screw | 0000000 | 00000 |
| 9/16" | 0.5625" | 18" | 12" | 3/8" | Screw | 0000000 | 00000 |
| 5/8" | 0.625" | 18" | 12" | 3/8" | Screw | 0000000 | 00000 |
| 3/4" | 0.75" | 18" | 12" | 5/16" | Screw | 0000000 | 00000 |
| 7/8" | 0.875" | 18" | 12" | 5/16" | Screw | 0000000 | 00000 |
| 1" | 1" | 18" | 12" | 5/16" | Screw | 0000000 | 00000 |
Inch—Hex/Round Shank | |||||||
Uncoated Steel | |||||||
| 9/16" | 0.5625" | 29" | 24" | 7/16" | Screw | 0000000 | 00000 |
| 5/8" | 0.625" | 29" | 24" | 7/16" | Screw | 0000000 | 00000 |
| 11/16" | 0.6875" | 29" | 24" | 7/16" | Screw | 0000000 | 00000 |
| 3/4" | 0.75" | 29" | 24" | 7/16" | Screw | 0000000 | 00000 |
| 13/16" | 0.8125" | 29" | 24" | 7/16" | Screw | 0000000 | 00000 |
| 7/8" | 0.875" | 29" | 24" | 7/16" | Screw | 0000000 | 00000 |
| 1" | 1" | 29" | 24" | 7/16" | Screw | 0000000 | 00000 |
| 1 1/16" | 1.0625" | 29" | 24" | 7/16" | Screw | 0000000 | 000000 |
Inch—Quick-Change Hex Shank | |||||||
Black-Oxide Steel | |||||||
| 1/2" | 0.5" | 17" | 12" | 3/8" | Screw | 0000000 | 00000 |
| 9/16" | 0.5625" | 18" | 15" | 7/16" | Screw | 0000000 | 00000 |
| 5/8" | 0.625" | 17" | 12" | 7/16" | Screw | 0000000 | 00000 |
| 3/4" | 0.75" | 18" | 15" | 7/16" | Screw | 0000000 | 00000 |
| 7/8" | 0.875" | 17" | 12" | 7/16" | Screw | 0000000 | 00000 |
| 1" | 1" | 17" | 12" | 7/16" | Screw | 0000000 | 00000 |
| 1 1/4" | 1.25" | 18" | 15" | 7/16" | Screw | 0000000 | 00000 |
| 1 3/4" | 1.75" | 17" | 12" | 7/16" | Screw | 0000000 | 00000 |
| 2" | 2" | 17" | 12" | 7/16" | Screw | 0000000 | 00000 |
Nonstick-Coated Steel | |||||||
| 7/16" | 0.4375" | 18" | 15.5" | 5/16" | Screw | 0000000 | 00000 |
| 1 1/8" | 1.125" | 18" | 15.5" | 7/16" | Screw | 0000000 | 00000 |
Uncoated Steel | |||||||
| 3/4" | 0.75" | 8" | 5" | 7/16" | Screw | 0000000 | 00000 |
| 7/8" | 0.875" | 8" | 5" | 7/16" | Screw | 0000000 | 00000 |
| 1" | 1" | 8" | 5" | 7/16" | Screw | 0000000 | 00000 |
| 1 1/4" | 1.25" | 8" | 5" | 7/16" | Screw | 0000000 | 00000 |
| 1 3/8" | 1.375" | 6 1/2" | 4" | 7/16" | Screw | 0000000 | 00000 |
| 1 1/2" | 1.5" | 6 1/2" | 4" | 7/16" | Screw | 0000000 | 00000 |
Flexible-Shaft Drill Bits for Wire Installation
The shaft is made of spring steel instead of hardened steel, so it flexes while drilling, allowing you to drill inside walls or between floors. A hole in the flute near the tip lets you pull wire through after holes are drilled. The end of the wire must be stripped prior to attaching it to the bit. Also known as bell hanger bits.
Use a hand guide (sold separately) to position flexible-shaft drill bits.
Use a ball guide (sold separately) to keep flexible-shaft drill bits centered between studs and drywall.
Shank | 54" Overall Lg. | 72" Overall Lg. | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Type | Size | Shaft Dia. | For Use On | Max. Drilling Dp. | Each | Max. Drilling Dp. | Each | ||
Powder-Coated Steel | |||||||||||
| 3/8" | 0.375" | Round | 3/16" | 3/16" | Wood | 53" | 000000 | 000000 | 71" | 000000 | 000000 |
| 1/2" | 0.5" | Round | 1/4" | 3/16" | Wood | 53" | 000000 | 00000 | 71" | 000000 | 00000 |
| 9/16" | 0.5625" | Round | 1/4" | 3/16" | Wood | 53" | 000000 | 00000 | 71" | 000000 | 00000 |
| 5/8" | 0.625" | Round | 1/4" | 3/16" | Wood | 53" | 000000 | 00000 | __ | 000000 | 00 |
| 3/4" | 0.75" | Round | 1/4" | 1/4" | Wood | 53" | 000000 | 00000 | __ | 000000 | 00 |
| 1" | 1" | Round | 1/4" | 1/4" | Wood | 53" | 000000 | 00000 | __ | 000000 | 00 |
For Drill Bit | |||||
|---|---|---|---|---|---|
| Material | Shank Type | Shaft Size | Lg. | Each | |
| Steel | Round | 3/16", 1/4" | 10" | 000000 | 000000 |
For Drill Bit | |||||||
|---|---|---|---|---|---|---|---|
| Material | Shank Type | Shank Size | Shaft Size | Dia. | No. of Guides | Each | |
| Plastic | Round | 3/16" | 3/16" | 1 1/2", 2" | 2 | 000000 | 000000 |
Round-Shank Masonry Drill Bit Sets for Rotary Hammers
Use with handheld power drills, drill presses, and in hammer drills. Drill holes using simultaneous rotary and hammering action to break masonry material into tiny granules. These bits drill faster and penetrate material with less pressure than rotary-only bits. Also called percussion or impact bits.
For technical drawings and 3-D models, click on a part number.
| Number of Pieces | Drill Bit Sizes Included | Point Style | Specifications Met | For Use On | Each | |
Inch | ||||||
|---|---|---|---|---|---|---|
Uncoated Carbide-Tipped Steel | ||||||
| 4 | 1/4"; 5/16"; 3/8"; 1/2" | Standard | ANSI B212.15 | Masonry, Concrete | 000000 | 000000 |
| 6 | 3/16"; 1/4"; 5/16"; 3/8"; 1/2"; 5/8" | Standard | ANSI B212.15 | Masonry, Concrete | 000000 | 00000 |
| 6 | 1/4"; 5/16"; 3/8"; 1/2"; 5/8"; 3/4" | Standard | ANSI B212.15 | Masonry, Concrete | 000000 | 00000 |