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System of Measurement System of Measurement |
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Drill Bit Size Drill Bit Size | Show |
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Drill Bit Size Drill Bit Size | Hide |
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Decimal Size Equivalent Decimal Size Equivalent |
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For Use On For Use On |
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Finish Finish |
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Material Material |
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Bit Style Bit Style |
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| Spiral Flute | Multidiameter |
Point Style Point Style |
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| Standard |
For Maximum Material Thickness For MaximumMaterial Thickness |
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Shank Type Shank Type |
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 | Reduced Round |
 | Hex |
 | Morse Taper |
Number of Sizes Number of Sizes |
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Individual/Set Individual/Set |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Length Class Length Class |
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| Reduced Shank Length |
Flute Direction Flute Direction |
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| Right Hand |
Point Angle Point Angle |
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Morse Taper Diameter Morse Taper Diameter |
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Morse Taper Number Morse Taper Number |
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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1/2" Diameter Reduced-Shank Drill Bits
Black Oxide
The shank has a smaller diameter than the tip, allowing you to drill large holes with machines that have small-capacity chucks. Also known as Silver and Deming bits, they have a 1/2” diameter shank.
For technical drawings and 3-D models, click on a part number.
Shank | Drill Bits | ||||||||
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| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | For Use On | Point Style | Each | |
Metric | |||||||||
Black-Oxide High-Speed Steel | |||||||||
| 29.0 mm | 1.1417" | 152mm | 53.3mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Standard | 0000000 | 000000 |
High-Speed Steel Morse Taper-Shank Drill Bits
Install the Morse taper shank directly into the tapered spindle on machines such as drill presses and lathes.
Morse Taper | |||||||||||
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| Drill Bit Size | Decimal Size Equivalent | No. | Dia. | Overall Lg. | Max. Drilling Dp. | Shank Type | Point Style | Specifications Met | For Use On | Each | |
Metric | |||||||||||
Black-Oxide High-Speed Steel | |||||||||||
| 29.0 mm | 1.142" | 3 | 0.938" | 296mm | 116mm | Morse Taper | Standard | DIN 345 | Steel, Iron, Stainless Steel | 0000000 | 0000000 |
High-Speed Steel Multidiameter Drill Bits
Titanium Nitride (TiN)
Uncoated
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 and black-oxide drill bits.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||||
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| Drill Bit Size | Decimal Size Equivalent | No. of Sizes | Overall Lg. | For Max. Material Thick. | Type | Size | Point Style | For Use On | Each | |
Metric | ||||||||||
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||||||
| 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 | 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 | 0000000 |
Uncoated High-Speed Steel | ||||||||||
| 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 | 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 |