System of Measurement System of Measurement |
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Decimal Size Equivalent Decimal Size Equivalent | Show |
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Decimal Size Equivalent Decimal Size Equivalent | Hide |
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For Use On For Use On |
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Point Style Point Style |
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| Standard |
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| Carbide Insert |
Shank Type Shank Type |
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 | Round |
 | Hex |
 | SDS Max |
 | Spline |
 | Threaded Hub |
Bit Style Bit Style |
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 | Spiral Flute |
 | Multi-Tooth |
 | Hollow |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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Individual/Set Individual/Set |
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Finish Finish |
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Flute Direction Flute Direction |
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| Right Hand |
RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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For Drilling Type For Drilling Type |
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Thread Size Thread Size |
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Bit ID Bit ID |
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Specifications Met Specifications Met |
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Component Component |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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About Masonry 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.
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Shank Type | Point Style | Specifications Met | For Use On | Includes | Each | |
Uncoated Carbide-Tipped Steel | ||||||||||
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| 2 1/2" | 2.5" | 17" | 12" | SDS Max | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 0000000 |
| Size | Decimal Size Equivalent | Overall Lg. | Material | Specifications Met | Each | |
| 2 1/2" | 2.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 0000000 |
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.
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Shank Type | Point Style | Specifications Met | For Use On | Includes | Each | |
Uncoated Carbide-Tipped Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 2 1/2" | 2.5" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 0000000 |
| Size | Decimal Size Equivalent | Overall Lg. | Material | Specifications Met | Each | |
| 2 1/2" | 2.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 0000000 |
| 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.
For technical drawings and 3-D models, click on a part number.
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.
Shank | |||||||||||
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| Size | Decimal Size Equivalent | Bit ID | Overall Lg. | Max. Drilling Dp. | Thread Size | Type | Size | Point Style | For Use On | Each | |
Diamond-Coated Steel | |||||||||||
| 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 | 0000000 |
Fast-Cutting Smooth-Finish Drill Bits for Wood
Multiple outlining teeth bore clean, flat-bottom holes without chipping or splintering your surface—even when cutting across the grain. These bits are excellent for boring straight holes, overlapping holes, and holes on close centers in soft wood, veneer, and laminates. The center guide point prevents the bit from wandering. Also known as multispur bits or Forstner bits.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||
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| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Each | |
Inch | ||||||||
Uncoated Steel | ||||||||
| 2 1/2" | 2.5" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 000000 |
Replaceable Carbide-Insert Drill Bits
Use these bits to drill a large number of holes with high precision. When the cutting edges dull, replace the carbide inserts (sold separately) instead of the entire bit. Each drill bit requires two inserts—one on the inner cutting edge and one on the outer cutting edge. Bits can be used in CNC machines with coolant-through technology; holes in the bit allow coolant to be channeled through the tool for more efficient chip evacuation.
For technical drawings and 3-D models, click on a part number.
Drill Bits | ||||||||||||
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For Insert Inscribed Circle Dia. (IC) | Shank | Replacement Screws | ||||||||||
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Inner | Outer | For Use On | Type | Size | Each | Each | ||
Steel | ||||||||||||
| 2 1/2" | 2.5" | 12 1/4" | 7 1/2" | 0.705" | 0.732" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1 1/2" | 0000000 | 0000000 | 0000000 | 00000 |
| For Drill Bit Size | Inscribed Circle Dia. (IC) | Thick. | Hole Dia. | Tip Radius | For Use On | Features | Each | |
Titanium-Aluminum-Nitride (TiAlN) Coated Carbide | ||||||||
|---|---|---|---|---|---|---|---|---|
| 2 1/4", 2 1/2" | 0.705" | 7/32" | 3/16" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 000000 |
| For Drill Bit Size | Inscribed Circle Dia. (IC) | Thick. | Hole Dia. | Tip Radius | For Use On | Features | Each | |
Titanium-Nitride (TiN) Coated Carbide | ||||||||
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| 2 1/4", 2 1/2" | 0.732" | 7/32" | 3/16" | 3/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 000000 |