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High-Speed Steel Multidiameter Drill Bits
Black Oxide
Titanium Nitride (TiN)
Uncoated
Steps with progressively larger diameters let you drill a range of sizes with one bit. Also known as step drills.
Black-oxide drill bits produce less friction than uncoated drill bits.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated drill bits and black-oxide drill bits.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | No. of Sizes | Overall Lg. | For Max. Material Thick. | Type | Size | Point Style | For Use On | Each | |
Inch | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
| 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2" | 0.125", 0.1563", 0.1875", 0.2188", 0.25", 0.2813", 0.3125", 0.3438", 0.375", 0.4063", 0.4375", 0.4688", 0.5" | 13 | 3 1/8" | 1/8" | 3-Flat | 1/4" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
| 3/16", 1/4", 5/16", 3/8", 7/16", 1/2" | 0.1875", 0.25", 0.3125", 0.375", 0.4375", 0.5" | 6 | 3 1/8" | 1/8" | 3-Flat | 1/4" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
| 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8" | 0.1875", 0.25", 0.3125", 0.375", 0.4375", 0.5", 0.5625", 0.625", 0.6875", 0.75", 0.8125", 0.875" | 12 | 3" | 1/8" | 3-Flat | 3/8" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
| 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4" | 0.25", 0.3125", 0.375", 0.4375", 0.5", 0.5625", 0.625", 0.6875", 0.75" | 9 | 2 5/8" | 1/8" | 3-Flat | 3/8" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
| 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4", 1 3/8" | 0.25", 0.375", 0.5", 0.625", 0.75", 0.875", 1", 1.125", 1.25", 1.375" | 10 | 3 1/8" | 1/8" | 3-Flat | 3/8" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
| 3/8", 1/2" | 0.375", 0.5" | 2 | 2" | 1/8" | 3-Flat | 1/4" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
| 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1" | 0.5", 0.5625", 0.625", 0.6875", 0.75", 0.8125", 0.875", 0.9375", 1" | 9 | 3 1/4" | 1/8" | 3-Flat | 1/2" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
| 7/8", 1", 1 1/8", 1 1/4", 1 3/8" | 0.875", 1", 1.125", 1.25", 1.375" | 5 | 3" | 1/8" | 3-Flat | 3/8" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||||||
| 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2" | 0.125", 0.1563", 0.1875", 0.2188", 0.25", 0.2813", 0.3125", 0.3438", 0.375", 0.4063", 0.4375", 0.4688", 0.5" | 13 | 3 1/4" | 1/8" | Hex | 1/4" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 00000 |
| 3/16", 1/4", 5/16", 3/8", 7/16", 1/2" | 0.1875", 0.25", 0.3125", 0.375", 0.4375", 0.5" | 6 | 3 1/4" | 3/8" | Hex | 1/4" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 00000 |
| 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8" | 0.1875", 0.25", 0.3125", 0.375", 0.4375", 0.5", 0.5625", 0.625", 0.6875", 0.75", 0.8125", 0.875" | 12 | 3" | 1/8" | Hex | 3/8" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 00000 |
| 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4" | 0.25", 0.3125", 0.375", 0.4375", 0.5", 0.5625", 0.625", 0.6875", 0.75" | 9 | 2 5/8" | 1/8" | Hex | 3/8" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 00000 |
| 1/4", 7/8", 1 1/8" | 0.25", 0.875", 1.125" | 3 | 3" | 5/32" | Hex | 3/8" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1" | 0.5625", 0.625", 0.6875", 0.75", 0.8125", 0.875", 0.9375", 1" | 8 | 2 7/8" | 1/8" | Hex | 3/8" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 00000 |
Uncoated High-Speed Steel | ||||||||||
| 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2" | 0.125", 0.1563", 0.1875", 0.2188", 0.25", 0.2813", 0.3125", 0.3438", 0.375", 0.4063", 0.4375", 0.4688", 0.5" | 13 | 3 1/4" | 1/8" | Hex | 1/4" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
| 3/16", 1/4", 5/16", 3/8", 7/16", 1/2" | 0.1875", 0.25", 0.3125", 0.375", 0.4375", 0.5" | 6 | 3 3/8" | 3/8" | Hex | 1/4" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
| 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8" | 0.1875", 0.25", 0.3125", 0.375", 0.4375", 0.5", 0.5625", 0.625", 0.6875", 0.75", 0.8125", 0.875" | 12 | 3" | 1/8" | Hex | 3/8" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
| 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4" | 0.25", 0.3125", 0.375", 0.4375", 0.5", 0.5625", 0.625", 0.6875", 0.75" | 9 | 2 5/8" | 1/8" | Hex | 3/8" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
| 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4", 1 3/8" | 0.25", 0.375", 0.5", 0.625", 0.75", 0.875", 1", 1.125", 1.25", 1.375" | 10 | 3 1/8" | 1/8" | Hex | 3/8" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
| 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1" | 0.5625", 0.625", 0.6875", 0.75", 0.8125", 0.875", 0.9375", 1" | 8 | 2 1/2" | 1/8" | Hex | 3/8" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
| 13/16", 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 3/16", 1 1/4", 1 5/16", 1 3/8" | 0.8125", 0.875", 0.9375", 1", 1.0625", 1.125", 1.1875", 1.25", 1.3125", 1.375" | 10 | 2 1/8" | 1/8" | Hex | 3/8" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
| 7/8", 1 1/8" | 0.875", 1.125" | 2 | 3" | 1/8" | Hex | 3/8" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
Metric | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
| 4.0 mm, 5.0 mm, 6.0 mm, 6.5 mm, 8.0 mm, 9.0 mm, 10.0 mm, 11.0 mm, 12.0 mm | 0.1575", 0.1969", 0.2362", 0.2559", 0.315", 0.3543", 0.3937", 0.4331", 0.4724" | 9 | 65mm | 2mm | 3-Flat | 6.4mm | Standard | Steel, Hardened Steel, Tool Steel, Iron, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
| 4.0 mm, 6.0 mm, 8.0 mm, 10.0 mm, 12.0 mm, 14.0 mm, 16.0 mm, 18.0 mm, 20.0 mm | 0.1575", 0.2362", 0.315", 0.3937", 0.4724", 0.5512", 0.6299", 0.7087", 0.7874" | 9 | 65mm | 2mm | 3-Flat | 6.4mm | Standard | Steel, Hardened Steel, Tool Steel, Iron, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
| 6.0 mm, 8.0 mm, 10.0 mm, 12.0 mm, 14.0 mm, 16.0 mm, 18.0 mm, 20.0 mm, 22.0 mm, 24.0 mm, 26.0 mm, 28.0 mm, 30.0 mm, 32.0 mm | 0.2362", 0.315", 0.3937", 0.4724", 0.5512", 0.6299", 0.7087", 0.7874", 0.8661", 0.9449", 1.0236", 1.1024", 1.1811", 1.2598", 1.378" | 15 | 89mm | 2mm | 3-Flat | 9.53mm | Standard | Steel, Hardened Steel, Tool Steel, Iron, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||||||
| 4.0 mm, 6.0 mm, 8.0 mm, 10.0 mm, 12.0 mm, 14.0 mm, 16.0 mm, 18.0 mm, 20.0 mm, 22.0 mm | 0.1575", 0.2362", 0.315", 0.3937", 0.4724", 0.5512", 0.6299", 0.7087", 0.7874", 0.8661" | 10 | 76mm | 5mm | Hex | 10mm | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 00000 |
| 5.0 mm, 7.5 mm, 10.0 mm, 13.0 mm, 16.0 mm, 19.0 mm, 21.0 mm, 23.0 mm, 26.0 mm, 29.0 mm, 31.0 mm, 33.0 mm, 35.0 mm | 0.1968", 0.2953", 0.3937", 0.5118", 0.6299", 0.748", 0.8268", 0.9055", 1.0236", 1.1417", 1.2205", 1.2992", 1.378" | 13 | 79mm | 4mm | Hex | 11.1mm | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
Uncoated High-Speed Steel | ||||||||||
| 4.0 mm, 6.0 mm, 8.0 mm, 10.0 mm, 12.0 mm, 14.0 mm, 16.0 mm, 18.0 mm, 20.0 mm, 22.0 mm | 0.1575", 0.2362", 0.315", 0.3937", 0.4724", 0.5512", 0.6299", 0.7087", 0.7874", 0.8661" | 10 | 76mm | 5mm | Hex | 10mm | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 00000 |
| 5.0 mm, 7.5 mm, 10.0 mm, 13.0 mm, 16.0 mm, 19.0 mm, 21.0 mm, 23.0 mm, 26.0 mm, 29.0 mm, 31.0 mm, 33.0 mm, 35.0 mm | 0.1968", 0.2953", 0.3937", 0.5118", 0.6299", 0.748", 0.8268", 0.9055", 1.0236", 1.1417", 1.2205", 1.2992", 1.378" | 13 | 79mm | 4mm | Hex | 11.1mm | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 00000 |
| 6.0 mm, 8.0 mm, 10.0 mm, 12.0 mm, 14.0 mm, 16.0 mm, 18.0 mm | 0.2362", 0.315", 0.3937", 0.4724", 0.5512", 0.6299", 0.7087" | 7 | 64mm | 5mm | Hex | 10mm | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 00000 |
Cobalt Steel Multidiameter Drill Bits
With better heat and wear resistance than high-speed steel, cobalt steel bits can run up to 25% faster and have a longer tool life. Steps with progressively larger diameters let you drill a range of sizes with one bit. Also known as step drills.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | No. of Sizes | Overall Lg. | For Max. Material Thick. | Type | Size | Point Style | For Use On | Each | |
Inch | ||||||||||
Uncoated Cobalt Steel | ||||||||||
| 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2" | 0.125", 0.1563", 0.1875", 0.2188", 0.25", 0.2813", 0.3125", 0.3438", 0.375", 0.4063", 0.4375", 0.4688", 0.5" | 13 | 3 1/4" | 1/8" | Hex | 1/4" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
| 3/16", 1/4", 5/16", 3/8", 7/16", 1/2" | 0.1875", 0.25", 0.3125", 0.375", 0.4375", 0.5" | 6 | 3 3/8" | 3/8" | Hex | 1/4" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 00000 |
| 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8" | 0.1875", 0.25", 0.3125", 0.375", 0.4375", 0.5", 0.5625", 0.625", 0.6875", 0.75", 0.8125", 0.875" | 12 | 3" | 1/8" | Hex | 3/8" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
| 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4" | 0.25", 0.3125", 0.375", 0.4375", 0.5", 0.5625", 0.625", 0.6875", 0.75" | 9 | 2 5/8" | 1/8" | Hex | 3/8" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 00000 |
| 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1" | 0.5625", 0.625", 0.6875", 0.75", 0.8125", 0.875", 0.9375", 1" | 8 | 2 1/2" | 1/8" | Hex | 7/16" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
| 7/8", 1 1/8" | 0.875", 1.125" | 2 | 3" | 1/8" | Hex | 7/16" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
Any-Diameter Drill Bits
A
B
Place a washer (not included) with an ID of the desired hole size over the bit and it acts as a stop to prevent the bit from drilling a larger hole.
Style A do not require a pilot hole.
Style B require a 1 29/64” pilot hole to start drilling.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Style | Drill Bit Size | Size Decimal Equivalent | Overall Lg. | For Max. Material Thick. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||||
Black-Oxide High-Speed Steel | |||||||||||
| A | 1/8"-9/16" | 0.125"-0.5625" | 2 1/4" | 1/16" | 0.08" | 3-Flat | 1/4" | Standard | Steel, Iron, Stainless Steel | 0000000 | 000000 |
| A | 1/4"-13/16" | 0.25"-0.8125" | 2 3/4" | 1/16" | 0.08" | 3-Flat | 3/8" | Standard | Steel, Iron, Stainless Steel | 0000000 | 00000 |
| A | 5/8"-1 3/16" | 0.625"-1.1875" | 3" | 1/16" | 0.08" | 3-Flat | 3/8" | Standard | Steel, Iron, Stainless Steel | 0000000 | 00000 |
| A | 1"-1 5/8" | 1"-1.625" | 3 1/4" | 1/16" | 0.08" | 3-Flat | 3/8" | Standard | Steel, Iron, Stainless Steel | 0000000 | 000000 |
| B | 1 1/2"-2 1/16" | 1.5"-2.0625" | 2 3/4" | 1/16" | 0.08" | 3-Flat | 3/8" | __ | Steel, Iron, Stainless Steel | 0000000 | 000000 |
Multidiameter Drill Bit Sets
Steps with progressively larger diameters let you drill a range of sizes with one bit. Also known as step drills.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated drill bits.
For technical drawings and 3-D models, click on a part number.
| Number of Pieces | Drill Bit Sizes Included | Shank Type | Point Style | For Use On | Each | |
Inch | ||||||
|---|---|---|---|---|---|---|
Uncoated High-Speed Steel | ||||||
| 3 | 1 each in sizes 1/8"-1/2", 3/16"-1/2", 1/4"-3/4" | Hex | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
| 4 | 1 each in sizes 1/8"-1/2", 3/16"-1/2", 3/16"-7/8", 13/16"-1 3/8" | Hex | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||
| 3 | 1 each in sizes 1/8"-1/2", 3/16"-1/2", 1/4"-3/4" | Hex | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |