Drill Bit Decimal Size Equivalents
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About Drill Bits
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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.
Inch Drill Bits
Shown with Carbide Inserts (Sold Separately)
Drill Bits | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Insert Inscribed Circle Dia. (IC) | Shank | Replacement Screws | ||||||||||
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Inner | Outer | For Use On | Type | Size | Each | Each | ||
Steel | ||||||||||||
| 1/2" | 0.5" | 4" | 1 1/2" | 0.189" | 0.189" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 3/4" | 0000000 | 0000000 | 0000000 | 00000 |
| 1/2" | 0.5" | 5" | 2 1/2" | 0.189" | 0.189" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 3/4" | 0000000 | 000000 | 0000000 | 0000 |
| 9/16" | 0.562" | 4 1/4" | 1.69" | 0.193" | 0.201" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 3/4" | 0000000 | 000000 | 0000000 | 0000 |
| 9/16" | 0.562" | 5 3/8" | 2.81" | 0.193" | 0.201" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 3/4" | 0000000 | 000000 | 0000000 | 0000 |
| 5/8" | 0.625" | 4 1/2" | 1.88" | 0.193" | 0.201" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 3/4" | 0000000 | 000000 | 0000000 | 0000 |
| 5/8" | 0.625" | 5 3/4" | 3.16" | 0.193" | 0.201" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 3/4" | 0000000 | 000000 | 0000000 | 0000 |
| 11/16" | 0.687" | 5" | 2.06" | 0.224" | 0.236" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1" | 0000000 | 000000 | 0000000 | 0000 |
| 11/16" | 0.687" | 6 3/8" | 3.44" | 0.224" | 0.236" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1" | 0000000 | 000000 | 0000000 | 0000 |
| 3/4" | 0.75" | 6 1/2" | 2 1/4" | 0.224" | 0.236" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1" | 0000000 | 000000 | 0000000 | 0000 |
| 3/4" | 0.75" | 6 3/4" | 3 3/4" | 0.224" | 0.236" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1" | 0000000 | 000000 | 0000000 | 0000 |
| 7/8" | 0.875" | 5 5/8" | 2.63" | 0.268" | 0.295" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1" | 0000000 | 000000 | 0000000 | 0000 |
| 7/8" | 0.875" | 7 3/8" | 4.38" | 0.268" | 0.295" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1" | 0000000 | 000000 | 0000000 | 0000 |
| 1" | 1" | 6 1/8" | 3" | 0.331" | 0.350" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1" | 0000000 | 000000 | 0000000 | 0000 |
| 1" | 1" | 8 1/8" | 5" | 0.331" | 0.350" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1" | 0000000 | 000000 | 0000000 | 0000 |
| 1 1/8" | 1.125" | 6 3/4" | 3.38" | 0.331" | 0.350" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1 1/4" | 0000000 | 000000 | 0000000 | 0000 |
| 1 1/8" | 1.125" | 9" | 5.63" | 0.331" | 0.350" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1 1/4" | 0000000 | 000000 | 0000000 | 0000 |
| 1 1/4" | 1.25" | 7 5/8" | 3 3/4" | 0.402" | 0.419" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1 1/2" | 0000000 | 000000 | 0000000 | 0000 |
| 1 1/4" | 1.25" | 10 1/8" | 6 1/4" | 0.402" | 0.419" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1 1/2" | 0000000 | 000000 | 0000000 | 0000 |
| 1 3/8" | 1.375" | 8" | 4.13" | 0.402" | 0.419" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1 1/2" | 0000000 | 000000 | 0000000 | 0000 |
| 1 3/8" | 1.375" | 10 3/4" | 6.88" | 0.402" | 0.419" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1 1/2" | 0000000 | 000000 | 0000000 | 0000 |
| 1 1/2" | 1.5" | 8 1/2" | 4 1/2" | 0.486" | 0.498" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1 1/2" | 0000000 | 000000 | 0000000 | 0000 |
| 1 1/2" | 1.5" | 11 1/2" | 7 1/2" | 0.486" | 0.498" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1 1/2" | 0000000 | 00000000 | 0000000 | 0000 |
| 1 5/8" | 1.625" | 9" | 4.88" | 0.486" | 0.498" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1 1/2" | 0000000 | 000000 | 0000000 | 0000 |
| 1 5/8" | 1.625" | 12 1/4" | 8.13" | 0.486" | 0.498" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1 1/2" | 0000000 | 00000000 | 0000000 | 0000 |
| 1 3/4" | 1.75" | 9 3/8" | 5 1/4" | 0.585" | 0.608" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1 1/2" | 0000000 | 000000 | 0000000 | 0000 |
| 2" | 2" | 10 3/8" | 6" | 0.585" | 0.608" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1 1/2" | 0000000 | 000000 | 0000000 | 0000 |
| 2 1/4" | 2.25" | 11 1/4" | 6 3/4" | 0.705" | 0.732" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1 1/2" | 0000000 | 000000 | 0000000 | 0000 |
| 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 | 000000 | 0000000 | 0000 |
Inner Inserts
Inner Insert
Inner Insert
| For Drill Bit Size | Inscribed Circle Dia. (IC) | Thick. | Hole Dia. | Tip Radius | For Use On | Features | Each | |
Titanium-Aluminum-Nitride (TiAlN) Coated Carbide | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/2" | 0.189" | 3/32" | 1/16" | 1/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 000000 |
| 9/16", 5/8" | 0.193" | 3/32" | 1/16" | 1/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 00000 |
| 11/16", 3/4" | 0.224" | 3/32" | 1/8" | 1/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 00000 |
| 7/8" | 0.268" | 1/8" | 1/8" | 1/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 00000 |
| 1", 1 1/8" | 0.331" | 1/8" | 1/8" | 1/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 00000 |
| 1 1/4", 1 3/8" | 0.402" | 1/8" | 3/16" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 00000 |
| 1 1/2", 1 5/8" | 0.486" | 5/32" | 3/16" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 00000 |
| 1 3/4", 2" | 0.585" | 3/16" | 3/16" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 00000 |
| 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 | 00000 |
Outer Inserts
Outer Insert
Outer Insert
| For Drill Bit Size | Inscribed Circle Dia. (IC) | Thick. | Hole Dia. | Tip Radius | For Use On | Features | Each | |
Titanium-Nitride (TiN) Coated Carbide | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/2" | 0.189" | 3/32" | 1/16" | 1/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 000000 |
| 9/16", 5/8" | 0.201" | 3/32" | 1/16" | 1/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 00000 |
| 11/16", 3/4" | 0.236" | 3/32" | 1/8" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 00000 |
| 7/8" | 0.295" | 1/8" | 1/8" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 00000 |
| 1", 1 1/8" | 0.350" | 1/8" | 1/8" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 00000 |
| 1 1/4", 1 3/8" | 0.419" | 1/8" | 3/16" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 00000 |
| 1 1/2", 1 5/8" | 0.498" | 5/32" | 3/16" | 3/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 00000 |
| 1 3/4", 2" | 0.608" | 3/16" | 3/16" | 3/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 00000 |
| 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 | 00000 |
Carbide Inserts for Replaceable Carbide-Insert Drill Bits
Pair an inner and outer insert with a compatible drill bit body (sold separately) to drill a large number of holes with high precision. When the cutting edges dull, replace the carbide inserts instead of the entire bit.
For technical drawings and 3-D models, click on a part number.
Inner Inserts
Inner Insert
Inner Insert
| For Drill Bit Size | For Manufacturer | For Manufacturer Series | Inscribed Circle Dia. (IC) | Thick. | Hole Dia. | Tip Radius | For Use On | Features | Each | |
Titanium-Aluminum-Nitride (TiAlN) Coated Carbide | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1/2" | Sandvik Coromant | CoroDrill 880 | 0.189" | 3/32" | 1/16" | 1/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 000000 |
| 9/16", 5/8" | Sandvik Coromant | CoroDrill 880 | 0.193" | 3/32" | 1/16" | 1/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 00000 |
| 11/16", 3/4" | Sandvik Coromant | CoroDrill 880 | 0.224" | 3/32" | 1/8" | 1/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 00000 |
| 7/8" | Sandvik Coromant | CoroDrill 880 | 0.268" | 1/8" | 1/8" | 1/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 00000 |
| 1", 1 1/8" | Sandvik Coromant | CoroDrill 880 | 0.331" | 1/8" | 1/8" | 1/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 00000 |
| 1 1/4", 1 3/8" | Sandvik Coromant | CoroDrill 880 | 0.402" | 1/8" | 3/16" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 00000 |
| 1 1/2", 1 5/8" | Sandvik Coromant | CoroDrill 880 | 0.486" | 5/32" | 3/16" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 00000 |
| 1 3/4", 2" | Sandvik Coromant | CoroDrill 880 | 0.585" | 3/16" | 3/16" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 00000 |
| 2 1/4", 2 1/2" | Sandvik Coromant | CoroDrill 880 | 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 | 00000 |
Outer Inserts
Outer Insert
Outer Insert
| For Drill Bit Size | For Manufacturer | For Manufacturer Series | Inscribed Circle Dia. (IC) | Thick. | Hole Dia. | Tip Radius | For Use On | Features | Each | |
Titanium-Nitride (TiN) Coated Carbide | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1/2" | Sandvik Coromant | CoroDrill 880 | 0.189" | 3/32" | 1/16" | 1/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 000000 |
| 9/16", 5/8" | Sandvik Coromant | CoroDrill 880 | 0.201" | 3/32" | 1/16" | 1/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 00000 |
| 11/16", 3/4" | Sandvik Coromant | CoroDrill 880 | 0.236" | 3/32" | 1/8" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 00000 |
| 7/8" | Sandvik Coromant | CoroDrill 880 | 0.295" | 1/8" | 1/8" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 00000 |
| 1", 1 1/8" | Sandvik Coromant | CoroDrill 880 | 0.350" | 1/8" | 1/8" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 00000 |
| 1 1/4", 1 3/8" | Sandvik Coromant | CoroDrill 880 | 0.419" | 1/8" | 3/16" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 00000 |
| 1 1/2", 1 5/8" | Sandvik Coromant | CoroDrill 880 | 0.498" | 5/32" | 3/16" | 3/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 00000 |
| 1 3/4", 2" | Sandvik Coromant | CoroDrill 880 | 0.608" | 3/16" | 3/16" | 3/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 00000 |
| 2 1/4", 2 1/2" | Sandvik Coromant | CoroDrill 880 | 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 | 00000 |