Drill Bit Decimal Size Equivalents
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About Drill Bits
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3/8" Diameter Reduced-Shank Drill Bits
The shank has a smaller diameter than the tip, allowing you to drill large holes with machines that have small-capacity chucks. A split point keeps the bit centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Black-Oxide High-Speed Steel | |||||||||
25/64" | 0.3906" | 5 1/8" | 3.75" | Reduced Round | 3/8" | Split | Steel, Iron, Stainless Steel | 0000000 | 000000 |
13/32" | 0.4063" | 5 1/4" | 3.88" | Reduced Round | 3/8" | Split | Steel, Iron, Stainless Steel | 0000000 | 00000 |
27/64" | 0.4219" | 5 3/8" | 3.94" | Reduced Round | 3/8" | Split | Steel, Iron, Stainless Steel | 0000000 | 00000 |
7/16" | 0.4375" | 5 1/2" | 4.06" | Reduced Round | 3/8" | Split | Steel, Iron, Stainless Steel | 0000000 | 00000 |
29/64" | 0.4531" | 5 5/8" | 4.19" | Reduced Round | 3/8" | Split | Steel, Iron, Stainless Steel | 0000000 | 00000 |
15/32" | 0.4688" | 5 3/4" | 4.31" | Reduced Round | 3/8" | Split | Steel, Iron, Stainless Steel | 0000000 | 00000 |
31/64" | 0.4844" | 5 7/8" | 4.38" | Reduced Round | 3/8" | Split | Steel, Iron, Stainless Steel | 0000000 | 00000 |
1/2" | 0.5" | 6" | 4.5" | Reduced Round | 3/8" | Split | Steel, Iron, Stainless Steel | 0000000 | 00000 |