A square-tipped screwdriver fits a recessed square hole in a screw head. Match the driver size to the screw.
Typical applications
- Square-tipped screwdrivers that hold screws with recessed square holes are useful for awkward, hard-to-reach areas.
Advantages
- A square-tipped screwdriver can hold a screw with a recessed square hole, which supports starting screws in hard-to-reach areas.
Specifications to check
- Check for a recessed square screw head and choose the correct driver size. A straight slotted blade is a different driver type.
Limitations
- A generic square‑drive screwdriver should not be used for prying, punching, or chiseling, and it should not be used to test whether a circuit is live.
Buying considerations
Match both the screw-head type and size. Do not use a screwdriver with a damaged tip, broken handle or bent shaft.
Safety & limits
- Keep the handle clean to reduce slipping. Secure small or easily moving work in a vise or clamp.
Sources & further reading
These links document the information used in this article. Manufacturer specifications and source research are not hands-on test results or an endorsement of a purchase.
- CCOHS: Square-drive screwdriver
Reference checked 2026-10-29