Compare material, finish, length class, and decimal size equivalents.
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 | 18" Overall Lg. | 36" Overall Lg. | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | Each | ||
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 | 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 | 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 | 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 | 0000000 | 00000 |
Black-Oxide Carbide-Tipped Steel | ||||||||||
| 21/64" | 0.328" | 4" | Round | 5/16" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 | 0000000 | 00000 |
| 7/16" | 0.438" | 4" | Round | 3/8" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 | 0000000 | 00000 |
| 9/16" | 0.563" | 4" | Round | 1/2" | Standard | Masonry, Concrete, Wood | 0000000 | 00000 | 0000000 | 00000 |
Flexible-Shaft Drill Bits for Wire Installation
The shaft is made of spring steel instead of hardened steel, so it flexes while drilling, allowing you to drill inside walls or between floors. A hole in the flute near the tip lets you pull wire through after holes are drilled. The end of the wire must be stripped prior to attaching it to the bit. Also known as bell hanger bits.
Use a hand guide (sold separately) to position flexible-shaft drill bits.
Use a ball guide (sold separately) to keep flexible-shaft drill bits centered between studs and drywall.
For technical drawings and 3-D models, click on a part number.
Shank | 54" Overall Lg. | 72" Overall Lg. | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Type | Size | Shaft Dia. | For Use On | Max. Drilling Dp. | Each | Max. Drilling Dp. | Each | ||
Powder-Coated Steel | |||||||||||
| 3/8" | 0.375" | Round | 3/16" | 3/16" | Wood | 53" | 000000 | 000000 | 71" | 000000 | 000000 |
| 1/2" | 0.5" | Round | 1/4" | 3/16" | Wood | 53" | 000000 | 00000 | 71" | 000000 | 00000 |
| 9/16" | 0.5625" | Round | 1/4" | 3/16" | Wood | 53" | 000000 | 00000 | 71" | 000000 | 00000 |
| 5/8" | 0.625" | Round | 1/4" | 3/16" | Wood | 53" | 000000 | 00000 | __ | 000000 | 00 |
| 3/4" | 0.75" | Round | 1/4" | 1/4" | Wood | 53" | 000000 | 00000 | __ | 000000 | 00 |
| 1" | 1" | Round | 1/4" | 1/4" | Wood | 53" | 000000 | 00000 | __ | 000000 | 00 |
For Drill Bit | |||||
|---|---|---|---|---|---|
| Material | Shank Type | Shaft Size | Lg. | Each | |
| Steel | Round | 3/16", 1/4" | 10" | 000000 | 000000 |
For Drill Bit | |||||||
|---|---|---|---|---|---|---|---|
| Material | Shank Type | Shank Size | Shaft Size | Dia. | No. of Guides | Each | |
| Plastic | Round | 3/16" | 3/16" | 1 1/2", 2" | 2 | 000000 | 000000 |