Drill Bit Decimal Size Equivalents
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About Drill Bits
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Drill Bits for Wire Installation
Unlike traditional wire-installing drill bits, you do not need to strip the end of the wire when using one of these bits. After drilling, insert the wire into the bit's hollow shaft and pull through the drilled hole. Also known as bell hanger bits.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||
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Drill Bit Size | Decimal Size Equivalent | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
18" Overall Lg. | ||||||||
Inch | ||||||||
Black-Oxide High-Speed Steel | ||||||||
21/64" | 0.328" | 3.31" | Round | 5/16" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 000000 |
25/64" | 0.39" | 3.88" | Round | 3/8" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
29/64" | 0.453" | 4.19" | Round | 7/16" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
33/64" | 0.515" | 4.81" | Round | 1/2" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
Black-Oxide Carbide-Tipped Steel | ||||||||
21/64" | 0.328" | 4" | Round | 5/16" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
7/16" | 0.438" | 4" | Round | 3/8" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
9/16" | 0.563" | 4" | Round | 1/2" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
28" Overall Lg. | ||||||||
Inch | ||||||||
Black-Oxide High-Speed Steel | ||||||||
21/64" | 0.328" | 3.31" | Round | 5/16" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
25/64" | 0.39" | 3.88" | Round | 3/8" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
29/64" | 0.453" | 4.19" | Round | 7/16" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
33/64" | 0.515" | 4.81" | Round | 1/2" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
Black-Oxide Carbide-Tipped Steel | ||||||||
21/64" | 0.328" | 4" | Round | 5/16" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
7/16" | 0.438" | 4" | Round | 3/8" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
9/16" | 0.563" | 4" | Round | 1/2" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
36" Overall Lg. | ||||||||
Inch | ||||||||
Black-Oxide High-Speed Steel | ||||||||
21/64" | 0.328" | 3.31" | Round | 5/16" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
25/64" | 0.39" | 3.88" | Round | 3/8" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
29/64" | 0.453" | 4.19" | Round | 7/16" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
33/64" | 0.515" | 4.81" | Round | 1/2" | Standard | Steel, Iron, Stainless Steel, Aluminum, Copper, Brass, Bronze, Fiberglass, Plastic, Wood | 0000000 | 00000 |
Black-Oxide Carbide-Tipped Steel | ||||||||
21/64" | 0.328" | 4" | Round | 5/16" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
7/16" | 0.438" | 4" | Round | 3/8" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |
9/16" | 0.563" | 4" | Round | 1/2" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 |