Screwdriver bit
short, replaceable screwdriver blade
A screwdriver bit is a detachable tip or toolhead used to drive screws, typically with a hand-operated screwdriver, drill, or impact driver. Interchangeable bits allow a single tool to work with many screw types and sizes. Screwdriver bits are among the most common accessories in hand and power tool systems and are used across construction, electronics, automotive repair, and woodworking. The concept of interchangeable bits has existed since at least the early 20th century.
Overview
Screwdriver bits fit into a bit holder or tool chuck and are designed to transmit torque to a screw head. Most bits are manufactured from hardened steel and follow standardized shank dimensions to ensure compatibility with a wide range of tools.
Bit sets commonly include multiple tip types (e.g., Phillips, Torx, Slotted) and sizes, making them a compact and versatile alternative to dedicated screwdrivers.
Screw drive types
There are many types of screwdriver bits, each corresponding to a different screw drive geometry. Common types include:
– Phillips (PH) – Cross-shaped tip, designed to cam out under high torque.
– Slotted (Flathead) – A flat blade; prone to slipping and less common in power tools.
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This entry incorporates text from “Screwdriver bit” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.