Drill Bit Decimal Size Equivalents
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About Drill Bits
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High-Speed Steel 1/2" Diameter Reduced-Shank Drill Bit Sets
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, these bits have a 1/2" diameter shank.
Drill bits with flats on shank have three flat sides to prevent the bit from slipping in the drill chuck.
Drill bits with a split point keep centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
| Number of Pieces | Drill Bit Sizes Included | Shank Size | Point Style | Features | For Use On | Each | |
Inch | |||||||
|---|---|---|---|---|---|---|---|
Black-Oxide High-Speed Steel | |||||||
| 16 | 17/32"-1" (increments of 1/32") | 1/2" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000000 |
| 16 | 17/32"-1" (increments of 1/32") | 1/2" | Standard | __ | Steel, Iron, Stainless Steel | 0000000 | 000000 |
Smooth-Finish Drill Bit Sets for Wood
Bore clean, flat bottom holes in soft wood, veneer, and laminates. The center guide point prevents the bit from wandering. Also known as Forstner bits.
For technical drawings and 3-D models, click on a part number.
| Number of Pieces | Drill Bit Sizes Included | Point Style | For Use On | Each | |
Inch | |||||
|---|---|---|---|---|---|
Uncoated Steel | |||||
| 16 | 1/4"-2 1/8" (increments of 1/8") | Standard | Wood | 0000000 | 0000000 |
Tap and Drill Bit Sets
Drill and tap a variety of hole sizes. These taps and drill bits are for use on metal and plastic.
High-speed steel taps and drill bits have a longer tool life than carbon steel. Uncoated high-speed steel taps and drill bits are strong enough for most jobs but don’t last as long as other high-speed steel taps and drill bits. Use them for small-scale jobs.
Plug-chamfer taps are a versatile choice for most tapping applications. With 3-5 chamfered cutting threads, they require moderate torque and are often used for start-to-finish tapping of through holes and closed-end holes. However, they do not start threads as easily as taper chamfers. When using them to tap closed-end holes, be sure to leave sufficient space at the bottom for chips to accumulate.
For technical drawings and 3-D models, click on a part number.
| No. of Pieces | Chamfer Type | Tap Sizes Included | No. of Flutes | Drill Bit Sizes Included | Drill Bit Material | Container Type | Each | |
Uncoated High-Speed Steel Taps | ||||||||
|---|---|---|---|---|---|---|---|---|
| 16 | Plug | 1 each of sizes: M3 × 0.50 mm M3.5 × 0.60 mm M4 × 0.70 mm M5 × 0.80 mm M6 × 1.00 mm M8 × 1.25 mm M10 × 1.50 mm M12 × 1.75 mm | 3, 4 | 2.5 mm 2.9 mm 3.3 mm 4.2 mm 5.0 mm 6.75 mm 8.5 mm 10.25 mm | Black Oxide High-Speed Steel | Plastic Pouch | 0000000 | 0000000 |
Bit Assortments
These assortments contain general-purpose bits.
Hex shank bits for power tools have a groove in the shank and fit directly into power tools without an adapter. They offer more reach for recessed holes and less wobble compared to a hex shank bit used with an adapter.
| No. of Pieces | Components Included | Bits Included | Adapters Included | Each | |
1/4" Hex Shank Size for Power Tools—Steel | |||||
|---|---|---|---|---|---|
| 16 | 12 Bits 4 Adapters | External Hex: 5/16" (1 5/8" O'all Lg.) Phillips: No. 1, No. 2 (6" O'all Lg.) Phillips: No. 2, No. 3 (3 1/2" O'all Lg.) Pozidriv®: No. 2 (3 1/2" O'all Lg.) Torx: T15, T20 (3 1/2" O'all Lg.) Torx: T20, T25, T27, T30 (6" O'all Lg.) | 1/4" Male Square Drive × 1/4" Hex Shank Adapter 3/8" Male Square Drive × 1/4" Hex Shank Adapter 3" Lg. Bit Adapter for Power Tools 6" Lg. Bit Adapter for Power Tools | 0000000 | 000000 |