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Drill Bit Decimal Size Equivalents
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About Drill Bits
More
Drill Bits for Glass and Ceramic
The spear-shaped point drills smoothly through glass and ceramic, reducing the chance of chipping and cracking. Coolant, such as water, is required when drilling with these bits.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||
|---|---|---|---|---|---|---|---|---|
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Each | |
Inch | ||||||||
Uncoated Carbide-Tipped Steel | ||||||||
| 1/8" | 0.125" | 2 1/4" | 1" | Round | 7/64" | Standard | 000000 | 00000 |
| 3/16" | 0.1875" | 2 1/4" | 1" | Round | 5/32" | Standard | 000000 | 0000 |
| 1/4" | 0.25" | 2 5/8" | 1" | Round | 11/64" | Standard | 000000 | 0000 |
| 5/16" | 0.3125" | 3" | 1" | Round | 7/32" | Standard | 000000 | 0000 |
| 3/8" | 0.375" | 3 5/8" | 1" | Round | 15/64" | Standard | 000000 | 00000 |
| 1/2" | 0.5" | 3 5/8" | 1" | Round | 5/16" | Standard | 000000 | 00000 |
| 5/8" | 0.625" | 3 3/4" | 0.25" | Round | 5/16" | Standard | 0000000 | 00000 |
| 3/4" | 0.75" | 4" | 0.25" | Round | 5/16" | Standard | 0000000 | 00000 |
| 7/8" | 0.875" | 4" | 0.25" | Round | 5/16" | Standard | 0000000 | 00000 |
| 1" | 1" | 4" | 0.25" | Round | 5/16" | Standard | 0000000 | 00000 |
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.
For technical drawings and 3-D models, click on a part number.
Inch Drill Bits
| 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 |
Long-Life Hole Saws for Ceramics and Masonry
Saw
Arbor with Pilot Drill
For 9/16"-1 3/16"
Dia. Saws
For 9/16"-1 3/16"
Dia. Saws
Arbor with Pilot Drill
for 1 1/4" Dia.
Saws or Greater
for 1 1/4" Dia.
Saws or Greater
The diamond-grit edge on these hole saws cuts more accurately, leaves a smoother finish, and lasts up to twice as long as carbide-grit-coated teeth. Saws are for use on reinforced plastic, Kevlar, stone, brick, and other abrasive materials with high silicon content. Attach them to a drill or drill press. An arbor with pilot drill (sold separately) is required. To cut ceramic tile, you must use a 1/4" carbide-tipped pilot drill.
For technical drawings and 3-D models, click on a part number.
Saws | Arbor with Pilot Drill with 1/4" Hex Shank | Arbor with Pilot Drill with 3/8" Hex Shank | Arbor with Pilot Drill with 7/16" Hex Shank | Replacement Pilot Drill for 1/4", 3/8", & 7/16" Hex Shank | Replacement Pilot Drill for 7/16" Hex Shank | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | For Arbor Thread Size | Each | Each | Each | Each | Each | Each | ||||||
1 7/8" Cutting Dp. | |||||||||||||
| 9/16" | 1/2"-20 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 |
| 5/8" | 1/2"-20 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 11/16" | 1/2"-20 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3/4" | 1/2"-20 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 13/16" | 1/2"-20 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 7/8" | 1/2"-20 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 15/16" | 1/2"-20 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 1" | 1/2"-20 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 1 1/16" | 1/2"-20 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 1 1/8" | 1/2"-20 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 1 3/16" | 1/2"-20 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
Saws | Arbor with Pilot Drill with 3/8" Hex Shank | Arbor with Pilot Drill with 7/16" Hex Shank | Replacement Pilot Drill for 1/4", 3/8", & 7/16" Hex Shank | Replacement Pilot Drill for 7/16" Hex Shank | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | For Arbor Thread Size | Each | Each | Each | Each | Each | |||||
1 7/8" Cutting Dp. | |||||||||||
| 1 1/4" | 5/8"-18 | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 |
| 1 5/16" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 1 3/8" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 1 1/2" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 1 5/8" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 1 3/4" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 1 7/8" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 2" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 2 1/8" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 2 1/4" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 2 3/8" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 2 1/2" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 2 5/8" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 2 3/4" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 2 7/8" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3 1/4" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3 3/8" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3 1/2" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3 5/8" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3 3/4" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 4" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 4 1/4" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 4 1/2" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 4 3/4" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 5" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 5 1/2" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 6" | 5/8"-18 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
Hole Saws for Ceramics and Masonry
Saw
Arbor with Pilot Drill
For 9/16"-1 3/16"
Dia. Saws
For 9/16"-1 3/16"
Dia. Saws
Arbor with Pilot Drill
for 1 1/4" Dia.
Saws or Greater
for 1 1/4" Dia.
Saws or Greater
These saws have carbide-grit-coated teeth that cut ceramic tile, fiberglass, masonry, plastic, and composites. Attach them to a drill or drill press. An arbor with pilot drill (sold separately) is required.
Saws | Arbor with Pilot Drill with 1/4" Hex Shank | Arbor with Pilot Drill with 3/8" Hex Shank | Arbor with Pilot Drill with 7/16" Hex Shank | Replacement Pilot Drill for 1/4", 3/8", & 7/16" Hex Shank | Replacement Pilot Drill for 7/16" Hex Shank | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | For Arbor Thread Size | Each | Each | Each | Each | Each | Each | ||||||
1 3/8" Cutting Dp. | |||||||||||||
| 5/8" | 1/2"-20 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 |
| 3/4" | 1/2"-20 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 7/8" | 1/2"-20 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 1" | 1/2"-20 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 1 1/8" | 1/2"-20 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
Saws | Arbor with Pilot Drill with 3/8" Hex Shank | Arbor with Pilot Drill with 7/16" Hex Shank | Replacement Pilot Drill for 1/4", 3/8", & 7/16" Hex Shank | Replacement Pilot Drill for 7/16" Hex Shank | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | For Arbor Thread Size | Each | Each | Each | Each | Each | |||||
1 3/8" Cutting Dp. | |||||||||||
| 1 1/4" | 5/8"-18 | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 |
| 1 3/8" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 1 1/2" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 1 3/4" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 1 7/8" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 2" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 2 1/8" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 2 1/4" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 2 3/8" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 2 1/2" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 2 3/4" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3 1/4" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3 3/8" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3 3/4" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 4" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 4 1/2" | 5/8"-18 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
Hole Saw Kits for Ceramics and Masonry
The saws in these kits have carbide-grit-coated teeth that cut ceramic tile, fiberglass, masonry, plastic, and composites. Attach hole saws to a drill or drill press with the included arbors.
| No. of Saws | Dia. | Cutting Dp. | Includes | Each | |
| 9 | 3/4", 7/8", 1 1/8", 1 3/8", 1 1/2", 1 3/4", 2", 2 1/4", 2 1/2" | 1 15/16" | Plastic Case, 3/8" Hex-Shank Arbor with 1/4" Dia. High-Speed Steel Pilot Drill, 7/16" Hex-Shank Arbor with 1/4" Dia. High-Speed Steel Pilot Drill | 0000000 | 0000000 |