System of Measurement System of Measurement |
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Decimal Size Equivalent Decimal Size Equivalent |
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Length Class Length Class |
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![]() | Short Length |
For Use On For Use On |
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Material Material |
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Finish Finish |
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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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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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Bit Style Bit Style |
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![]() | Spiral Flute |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Flute Direction Flute Direction |
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Right Hand |
Individual/Set Individual/Set |
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Thread Size Thread Size |
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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.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated and black-oxide 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 | Pkg. | |||||||||||
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Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | Pkg. Qty. | Pkg. | ||
Inch | |||||||||||||
Black-Oxide High-Speed Steel | |||||||||||||
21/64" | 0.3281" | 3" | 1.19" | Round | 21/64" | Split | ASME B94.11M | Steel, Iron, Stainless Steel | 0000000 | 00000 | 6 | 00000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||||||
21/64" | 0.3281" | 3" | 1.19" | Round | 21/64" | Split | __ | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 | 3 | 0000000 | 00000 |
Uncoated High-Speed Steel | |||||||||||||
21/64" | 0.3281" | 3" | 1.19" | Round | 21/64" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
Wire Gauge | |||||||||||||
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||||||
17 ga | 0.173" | 2 1/4" | 1.19" | Round | 0.173" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
16 ga | 0.177" | 2 1/4" | 1.19" | Round | 0.177" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
15 ga | 0.18" | 2 1/4" | 1.19" | Round | 0.18" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
14 ga | 0.182" | 2 1/4" | 1.19" | Round | 0.182" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
13 ga | 0.185" | 2 1/4" | 1.19" | Round | 0.185" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
Uncoated High-Speed Steel | |||||||||||||
17 ga | 0.173" | 2 1/4" | 1.19" | Round | 0.173" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
16 ga | 0.177" | 2 1/4" | 1.19" | Round | 0.177" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
15 ga | 0.18" | 2 1/4" | 1.19" | Round | 0.18" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
14 ga | 0.182" | 2 1/4" | 1.19" | Round | 0.182" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
13 ga | 0.185" | 2 1/4" | 1.19" | Round | 0.185" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
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 | Pkg. | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | Pkg. Qty. | Pkg. | ||
Inch | ||||||||||||
Uncoated Cobalt Steel | ||||||||||||
21/64" | 0.3281" | 3" | 1.19" | Round | 21/64" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 | 6 | 000000000 | 000000 |
Titanium-Nitride (TiN) Coated Cobalt Steel | ||||||||||||
21/64" | 0.3281" | 3" | 1.19" | Round | 21/64" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | __ | 000000 | 00 |
Letter | ||||||||||||
Uncoated Cobalt Steel | ||||||||||||
Q | 0.332" | 3" | 1.19" | Round | 0.332" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 000000000 | 0000 | __ | 000000 | 00 |
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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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 | |||||||||||
9/64" | 0.1406" | 2 3/8" | 1.19" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 000000 |
11/64" | 0.1719" | 2 3/8" | 1.19" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 00000 |
3/16" | 0.1875" | 2 3/8" | 1.19" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 0000 |
13/64" | 0.2031" | 2 3/8" | 1.19" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 00000 |
1/4" | 0.25" | 2 3/8" | 1.19" | 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 | |||||||||||
30 ga | 0.1285" | 2 3/8" | 1.19" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 0000 |
27 ga | 0.144" | 2 3/8" | 1.19" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 0000 |
21 ga | 0.159" | 2 3/8" | 1.19" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 0000 |
20 ga | 0.161" | 2 3/8" | 1.19" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 0000 |
13 ga | 0.185" | 2 3/8" | 1.19" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 0000 |
10 ga | 0.1935" | 2 3/8" | 1.19" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 0000 |
Round-Shank Drill Bits with Guide for Countersunk Holes


The built-in guide has a beveled tip that fits into countersunk holes in hardware, such as hinges and latches, to center the bit. Guides are spring loaded; drilling pressure compresses the guide body and extends the drill bit into the workpiece. Also known as Vix bits.
For technical drawings and 3-D models, click on a part number.
Drill Bits with Guide | |||||||||||||
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Shank | Replacement Drill Bits | ||||||||||||
For Screw Size | Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Guide Material | Point Style | For Use On | Each | Each | ||
Inch | |||||||||||||
Uncoated High-Speed Steel | |||||||||||||
No. 12 | 11/64" | 0.1719" | 15/16" | 1.19" | Round | 3/8" | Steel | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic, Wood | 00000000 | 000000 | 00000000 | 00000 |
No. 14 | 13/64" | 0.2031" | 15/16" | 1.19" | Round | 3/8" | Steel | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic, Wood | 00000000 | 00000 | 00000000 | 0000 |