System of Measurement System of Measurement |
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Drill Bit Size Drill Bit Size |
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Decimal Size Equivalent Decimal Size Equivalent |
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Thread Size Thread Size |
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Length Class Length Class |
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 | Jobbers' Length |
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Maximum Drilling Depth Maximum Drilling Depth | Show |
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Maximum Drilling Depth Maximum Drilling Depth | Hide |
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For Use On For Use On |
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Material Material |
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Finish Finish |
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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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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Flute Direction Flute Direction |
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Bit Style Bit Style |
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Individual/Set Individual/Set |
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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Short-Length Drill Bits
Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers'- and maintenance-length drill bits.
Black-oxide drill bits produce less friction than uncoated drill bits.
For technical drawings and 3-D models, click on a part number.
Shank | Each | |||||||||
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| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Wire Gauge | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
| 60 ga. | 0.04" | 1 3/8" | 0.44" | Round | 0.04" | Standard | ASME B94.11M | Steel, Iron, Stainless Steel | 00000000 | 00000 |
Short-Length Cobalt Steel Drill Bits
Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers'-length drill bits. Made of cobalt steel, which has better heat and wear resistance than high-speed steel, they can run up to 25% faster and have a longer tool life.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated drill bits.
Drill bits with a split point keep centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | Each | ||||||||
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| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Wire Gauge | |||||||||
Titanium-Nitride (TiN) Coated Cobalt Steel | |||||||||
| 35 ga. | 0.11" | 1 7/8" | 0.44" | Round | 0.11" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 |
| 34 ga. | 0.111" | 1 7/8" | 0.44" | Round | 0.111" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 0000 |
Threaded-Shank Drill Bits
All have a 1/4"-28 threaded shank which installs directly into the threaded spindle on a compatible drill. A split point keeps the bit centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||||
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| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Thread Size | Point Style | Specifications Met | For Use On | Each | |
Inch—Short Length | |||||||||||
Black-Oxide High-Speed Steel | |||||||||||
| 3/32" | 0.0938" | 3/4" | 0.44" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 00000 |
| 7/64" | 0.1094" | 3/4" | 0.44" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 00000 |
| 1/8" | 0.125" | 3/4" | 0.44" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 0000 |
| 9/64" | 0.1406" | 7/8" | 0.44" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 00000 |
| 5/32" | 0.1563" | 7/8" | 0.44" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 0000 |
Wire Gauge—Short Length | |||||||||||
Black-Oxide High-Speed Steel | |||||||||||
| 40 ga. | 0.098" | 3/4" | 0.44" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 0000 |
| 30 ga. | 0.1285" | 7/8" | 0.44" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 0000 |
| 27 ga. | 0.144" | 7/8" | 0.44" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 0000 |
| 21 ga. | 0.159" | 7/8" | 0.44" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 0000 |
| 20 ga. | 0.161" | 7/8" | 0.44" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 0000 |
Drill Bits for Aluminum, Brass, and Bronze
Because softer metal, like aluminum, brass, and bronze, can clog a bit, the flutes on these bits lift chips out of the hole. Also known as slow-spiral drill bits. They are jobbers' length and have the rigidity and length required for most applications.
For technical drawings and 3-D models, click on a part number.
Shank | Each | ||||||||
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| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | 1-11 | 12-Up | |
Wire Gauge—Spiral Flute | |||||||||
Uncoated High-Speed Steel | |||||||||
| 69 ga. | 0.0292" | 1 3/8" | 0.44" | Round | 0.0292" | Standard | 00000000 | 00000 | 00000 |