About Masonry Drill Bits
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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Changeable-Size SDS-Max-Shank Masonry Core Drill Bits for Rotary Hammers
These bits allow you to switch to another size by changing only the bit body. They are hollow and cut with their outside edge for drilling large holes. The SDS-Max shank has three deep slots and two shallow slots for use with SDS-Max-drive rotary hammers. They cannot be used with SDS-Plus-drive rotary hammers.
Drill holes using simultaneous rotary and hammering action to break masonry material into tiny granules. This type of bit drills faster and penetrates material with less pressure than rotary-only bits. Also known as percussion or impact bits. To achieve maximum drilling depth, break up and remove the core every 4” before drilling deeper.
Drill bits include a pilot drill to make starting holes easier.
For technical drawings and 3-D models, click on a part number.
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Shank Type | Point Style | Specifications Met | For Use On | Includes | Each | |
Uncoated Carbide-Tipped Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 1/2" | 1.5" | 17" | 12" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 0000000 |
| 1 3/4" | 1.75" | 17" | 12" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
| 2" | 2" | 17" | 12" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
| 2 1/2" | 2.5" | 17" | 12" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
| 3" | 3" | 17" | 12" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
| 3 1/2" | 3.5" | 17" | 12" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
| 4" | 4" | 17" | 12" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
| 4 1/2" | 4.5" | 17" | 12" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
| 5" | 5" | 17" | 12" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Material | Specifications Met | Each | |
| 1 1/2" | 1.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 0000000 |
| 1 3/4" | 1.75" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
| 2" | 2" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
| 2 1/2" | 2.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
| 3" | 3" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
| 3 1/2" | 3.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
| 4" | 4" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
| 4 1/2" | 4.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
| 5" | 5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
| For Drill Bit Size | Material | Each | |
| 1 1/2", 1 3/4", 2 1/2", 2", 3 1/2", 3", 4 1/2", 4", 5" | Carbide-Tipped Steel | 0000000 | 000000 |
SDS-Max-Shank Masonry Core Drill Bits for Rotary Hammers
These hollow bits cut with their outside edge for drilling large holes. The SDS-Max shank has three deep slots and two shallow slots for use with SDS-Max-drive rotary hammers. They cannot be used with SDS-Plus-drive rotary hammers. Drill holes using simultaneous rotary and hammering action to break masonry material into tiny granules. This type of bit drills faster and penetrates material with less pressure than rotary-only bits. Also known as percussion or impact bits. The included pilot drill makes starting holes easier.
For technical drawings and 3-D models, click on a part number.
| Drill Bit Size | Decimal Size Equivalent | Shank Type | Point Style | Specifications Met | For Use On | Includes | Max. Drilling Dp. | Each | |
12" Overall Lg. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Inch | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
| 2" | 2" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill, Core Ejector Key | 7" | 00000000 | 0000000 |
| 2 5/8" | 2.625" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill, Core Ejector Key | 7" | 00000000 | 000000 |
| 3 1/4" | 3.25" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill, Core Ejector Key | 7" | 00000000 | 000000 |
| 3 9/16" | 3.5625" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill, Core Ejector Key | 7" | 00000000 | 000000 |
22" Overall Lg. | |||||||||
Inch | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
| 1 3/4" | 1.75" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill, Core Ejector Key | 17" | 00000000 | 000000 |
| 2" | 2" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill, Core Ejector Key | 17" | 00000000 | 000000 |
| 2 5/8" | 2.625" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill, Core Ejector Key | 17" | 00000000 | 000000 |
| 3 1/4" | 3.25" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill, Core Ejector Key | 17" | 00000000 | 000000 |
| 4" | 4" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill, Core Ejector Key | 17" | 00000000 | 000000 |
| 5" | 5" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill, Core Ejector Key | 17" | 00000000 | 000000 |
| Replacement Pilot Drill with Core Ejector Key | 00000000 | Each | 000000 |
Changeable-Size Spline-Shank Masonry Core Drill Bits for Rotary Hammers
These bits allow you to switch to another size by changing only the bit body. They are hollow and cut with their outside edge for drilling large holes. The shank has 12 splines for use with a spline-drive rotary hammer. Drill holes using simultaneous rotary and hammering action to break masonry material into tiny granules. This type of bit drills faster and penetrates material with less pressure than rotary-only bits. Also called percussion or impact bits.
Drill bits include a pilot drill to make starting holes easier.
For technical drawings and 3-D models, click on a part number.
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Shank Type | Point Style | Specifications Met | For Use On | Includes | Each | |
Uncoated Carbide-Tipped Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 1/2" | 1.5" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 0000000 |
| 1 3/4" | 1.75" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
| 2" | 2" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
| 2 1/2" | 2.5" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
| 3" | 3" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
| 3 1/2" | 3.5" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
| 4 1/2" | 4.5" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
| 5" | 5" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Material | Specifications Met | Each | |
| 1 1/2" | 1.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 0000000 |
| 1 3/4" | 1.75" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
| 2" | 2" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
| 2 1/2" | 2.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
| 3" | 3" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
| 3 1/2" | 3.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
| 4 1/2" | 4.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
| 5" | 5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
| For Drill Bit Size | Material | Each | |
| 1 1/2", 1 3/4", 2 1/2", 2", 3 1/2", 3", 4 1/2", 4", 5" | Carbide-Tipped Steel | 0000000 | 000000 |
Hex-Shank Masonry Core Drill Bits for Rotary-Only Drilling
These hollow bits cut with their outside edge for drilling large holes. Instead of using a hammering action to break up masonry material, these bits drill with rotary action only, requiring more pressure to grind up material. Use with handheld power drills, drill presses, and in hammer drills set to rotary-only mode. Do not use in hammering applications. To achieve maximum drilling depth, break up and remove the core every 4” before drilling deeper.
Pilot drills (sold separately) make starting holes easier.
For technical drawings and 3-D models, click on a part number.
Drill Bits | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Shank | Length Extensions | Pilot Drills | |||||||||||||
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Specifications Met | For Use On | Each | Shank Size | Overall Lg. | Each | Each | |||
Inch | |||||||||||||||
Uncoated Carbide-Tipped Steel | |||||||||||||||
| 1" | 1" | 9" | 7" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 0000000 | 1/2" | 18" | 0000000 | 000000 | 000000 | 00 |
| 1" | 1" | 12" | 10" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 000000 | 1/2" | 18" | 0000000 | 00000 | 000000 | 00 |
| 1 1/4" | 1.25" | 12" | 10" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 000000 | 1/2" | 18" | 0000000 | 00000 | 000000 | 00 |
| 1 1/2" | 1.5" | 12" | 10" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 000000 | 1/2" | 18" | 0000000 | 00000 | 000000 | 00 |
| 1 3/4" | 1.75" | 12" | 10" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 000000 | 1/2" | 18" | 0000000 | 00000 | 0000000 | 000000 |
| 2" | 2" | 12" | 10" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 000000 | 1/2" | 18" | 0000000 | 00000 | 0000000 | 00000 |
| 2 1/2" | 2.5" | 12" | 10" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 000000 | 3/4" | 18" | 0000000 | 00000 | 0000000 | 00000 |
| 3" | 3" | 12" | 10" | Hex | 1/2" | ANSI B212.15 | Masonry, Concrete | 0000000 | 000000 | 3/4" | 18" | 0000000 | 00000 | 0000000 | 00000 |
Masonry Drill Bits for Drilling Rigs
Use these diamond-coated hollow bits for wet drilling of masonry, concrete, and rebar with a drilling rig. They're not for dry drilling or use with portable electric drills or grinders. The size listed is the bit’s OD.
Adapters let you use your bit on a drilling rig with a different thread size.
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Bit ID | Overall Lg. | Max. Drilling Dp. | Thread Size  | Type | Size | Point Style | For Use On | Each | |
Diamond-Coated Steel | |||||||||||
| 1" | 1" | 3/4" | 15 1/2" | 13" | 5/8"-11 | Threaded Hub | 1" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 0000000 |
| 1 1/8" | 1.125" | 7/8" | 15 1/2" | 13" | 5/8"-11 | Threaded Hub | 1 1/8" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 1 1/4" | 1.25" | 1" | 15 1/2" | 13" | 5/8"-11 | Threaded Hub | 1 1/4" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 1 3/8" | 1.375" | 1 1/8" | 15 1/2" | 13" | 5/8"-11 | Threaded Hub | 1 3/8" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 1 1/2" | 1.5" | 1 1/4" | 15 1/2" | 13" | 5/8"-11 | Threaded Hub | 1 1/2" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 1 3/4" | 1.75" | 1 1/2" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 1 3/4" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 2" | 2" | 1 3/4" | 16 1/2" | 14" | 1 1/4"-7 | Threaded Hub | 2" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 2 1/4" | 2.25" | 2" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 2 1/4" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 2 1/2" | 2.5" | 2 1/4" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 2 1/2" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 2 3/4" | 2.75" | 2 1/2" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 2 3/4" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 3" | 3" | 2 3/4" | 16 1/2" | 14" | 1 1/4"-7 | Threaded Hub | 3" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 3 1/2" | 3.5" | 3 1/4" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 3 1/2" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 4" | 4" | 3 3/4" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 4" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 4 1/2" | 4.5" | 4 1/4" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 4 1/2" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 5" | 5" | 4 3/4" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 5" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 6" | 6" | 5 3/4" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 6" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 7" | 7" | 6 3/4" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 7" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 8" | 8" | 7 5/8" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 8" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 10" | 10" | 9 5/8" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 10" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| 12" | 12" | 11 5/8" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 12" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
| Overall Lg. | Male Thread Size | Female Thread Size | For Drill Bit Shank Type | Each | |
| 5 3/8" | 5/8"-11 | 1 1/4"-7 | Threaded Hub | 0000000 | 0000000 |
SDS-Max-Shank Hollow Masonry Drill Bits for Dust Containment
When connected to a vacuum, these hollow bits can suck up concrete dust while drilling to help meet OSHA standards for silica dust exposure. They can also be used to clean out holes for installing adhesive anchors. The SDS-Max shank has three deep slots and two shallow slots for use with SDS-Max-drive rotary hammers. They cannot be used with SDS-Plus-drive rotary hammers.
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Shank Type | Point Style | For Vacuum Hose ID | For Use On | Each | |
Inch | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Titanium-Nitride (TiN) Coated Carbide-Tipped Steel | |||||||||
| 3/4" | 0.75" | 21" | 12 1/2" | SDS Max | Standard | 1 3/8" | Masonry, Concrete | 000000 | 0000000 |
| 13/16" | 0.8125" | 25" | 15" | SDS Max | Standard | 1 3/8" | Masonry, Concrete | 000000 | 000000 |
| 7/8" | 0.875" | 25" | 15" | SDS Max | Standard | 1 3/8" | Masonry, Concrete | 000000 | 000000 |
| 1" | 1" | 27" | 17 1/2" | SDS Max | Standard | 1 3/8" | Masonry, Concrete | 000000 | 000000 |
| 1 1/8" | 1.125" | 29" | 20" | SDS Max | Standard | 1 3/8" | Masonry, Concrete | 000000 | 000000 |
| 1 3/8" | 1.375" | 35" | 25" | SDS Max | Standard | 1 3/8" | Masonry, Concrete | 000000 | 000000 |
SDS-Plus-Shank Hollow Masonry Drill Bits for Dust Containment
When connected to a vacuum, these hollow bits can suck up concrete dust while drilling to help meet OSHA standards for silica dust exposure. They can also be used to clean out holes for installing adhesive anchors. The SDS-Plus shank has two deep slots and two shallow slots for use with SDS-Plus-drive rotary hammers. They cannot be used with SDS-Max-drive rotary hammers.
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Shank Type | Point Style | For Vacuum Hose ID | For Use On | Each | |
Inch | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Titanium-Nitride (TiN) Coated Carbide-Tipped Steel | |||||||||
| 5/8" | 0.625" | 15" | 10" | SDS Plus | Standard | 1 3/8" | Masonry, Concrete | 000000 | 0000000 |
| 11/16" | 0.6875" | 18" | 12 1/2" | SDS Plus | Standard | 1 3/8" | Masonry, Concrete | 000000 | 000000 |
| 3/4" | 0.75" | 18" | 12 1/2" | SDS Plus | Standard | 1 3/8" | Masonry, Concrete | 000000 | 000000 |
Core Drill Bits for Glass and Ceramic
Reduce the chance of chipping and cracking when drilling in glass and ceramic. These hollow bits are diamond-coated for long life and fast cutting. They are for use in drill presses only and require an adapter (sold separately). Attach the threaded nut to the adapter, then install the adapter into the chuck on a drill press. Coolant, such as water, is required when drilling with these bits. The size listed is the bit's OD.
Drill press adapters attach to a water line, which acts as coolant during drilling, and include an on/off valve. Both adapters work with all of these drill bits, but choose the shank size that fits your application.
For technical drawings and 3-D models, click on a part number.
| Drill Bit Size | Decimal Size Equivalent | Bit ID | Overall Lg. | Max. Drilling Dp. | Diamond Tip Lg. | Diamond Grit | Recommended Operating Speed, rpm | Each | |
Diamond-Coated Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3/32" | 0.0938" | 0.043" | 3 1/2" | 2" | 1/8" | 100 | 1,800-2,400 | 0000000 | 0000000 |
| 1/8" | 0.125" | 0.075" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
| 5/32" | 0.1563" | 0.106" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
| 3/16" | 0.1875" | 0.137" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
| 7/32" | 0.2188" | 0.169" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
| 1/4" | 0.25" | 0.2" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
| 9/32" | 0.2813" | 0.231" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
| 5/16" | 0.3125" | 0.262" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
| 3/8" | 0.375" | 0.325" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
| 7/16" | 0.4375" | 0.387" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
| 1/2" | 0.5" | 0.446" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
| 9/16" | 0.5625" | 0.504" | 3 1/2" | 2" | 1/4" | 100 | 1,250-1,800 | 0000000 | 000000 |
| 5/8" | 0.625" | 0.562" | 3 1/2" | 2" | 1/4" | 100 | 1,250-1,800 | 0000000 | 000000 |
| 3/4" | 0.75" | 0.692" | 3 1/2" | 2" | 1/4" | 100 | 1,250-1,800 | 0000000 | 000000 |
| 7/8" | 0.875" | 0.817" | 3 1/2" | 2" | 1/4" | 100 | 1,250-1,800 | 0000000 | 000000 |
| 1" | 1" | 0.94" | 3 1/2" | 2" | 1/4" | 100 | 1,250-1,800 | 0000000 | 000000 |
| 1 1/4" | 1.25" | 1.19" | 3 1/2" | 2" | 1/4" | 100 | 1,250-1,800 | 0000000 | 000000 |
Drill Bits for Paper and Fabric
These bits have razor-sharp cutting edges for making clean holes in fibrous material. They are standard Style A bits for use with Challenge and Lassco paper-drilling machines.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||
|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Each | |
Inch | |||||||
Uncoated Steel | |||||||
| 1/8" | 0.125" | 3 1/8" | 1" | Round | 11/16" | 0000000 | 000000 |
| 3/16" | 0.1875" | 3 1/8" | 1 3/4" | Round | 11/16" | 0000000 | 00000 |
| 1/4" | 0.25" | 3 1/8" | 2" | Round | 11/16" | 0000000 | 00000 |
| 5/16" | 0.3125" | 3 1/8" | 2" | Round | 11/16" | 0000000 | 00000 |
| 3/8" | 0.375" | 3 1/8" | 2" | Round | 11/16" | 0000000 | 00000 |
| 7/16" | 0.4375" | 3 1/8" | 2" | Round | 11/16" | 0000000 | 00000 |
| 1/2" | 0.5" | 3 1/8" | 2" | Round | 11/16" | 0000000 | 00000 |
Drill Bits for Wire Installation
Unlike traditional wire-installing drill bits, you do not need to strip the end of the wire when using one of these bits. After drilling, insert the wire into the bit's hollow shaft and pull through the drilled hole. Also known as bell hanger bits.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||
|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
18" Overall Lg. | ||||||||
Inch | ||||||||
Black-Oxide High-Speed Steel | ||||||||
| 21/64" | 0.328" | 3.31" | Round | 5/16" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 000000 |
| 25/64" | 0.39" | 3.88" | Round | 3/8" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
| 29/64" | 0.453" | 4.19" | Round | 7/16" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
| 33/64" | 0.515" | 4.81" | Round | 1/2" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
Black-Oxide Carbide-Tipped Steel | ||||||||
| 21/64" | 0.328" | 4" | Round | 5/16" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
| 7/16" | 0.438" | 4" | Round | 3/8" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
| 9/16" | 0.563" | 4" | Round | 1/2" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
28" Overall Lg. | ||||||||
Inch | ||||||||
Black-Oxide High-Speed Steel | ||||||||
| 21/64" | 0.328" | 3.31" | Round | 5/16" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
| 25/64" | 0.39" | 3.88" | Round | 3/8" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
| 29/64" | 0.453" | 4.19" | Round | 7/16" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
| 33/64" | 0.515" | 4.81" | Round | 1/2" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
Black-Oxide Carbide-Tipped Steel | ||||||||
| 21/64" | 0.328" | 4" | Round | 5/16" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
| 7/16" | 0.438" | 4" | Round | 3/8" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
| 9/16" | 0.563" | 4" | Round | 1/2" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
36" Overall Lg. | ||||||||
Inch | ||||||||
Black-Oxide High-Speed Steel | ||||||||
| 21/64" | 0.328" | 3.31" | Round | 5/16" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
| 25/64" | 0.39" | 3.88" | Round | 3/8" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
| 29/64" | 0.453" | 4.19" | Round | 7/16" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
| 33/64" | 0.515" | 4.81" | Round | 1/2" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
Black-Oxide Carbide-Tipped Steel | ||||||||
| 21/64" | 0.328" | 4" | Round | 5/16" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
| 7/16" | 0.438" | 4" | Round | 3/8" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
| 9/16" | 0.563" | 4" | Round | 1/2" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |