A center punch marks a hole center with an indentation. The recess helps guide a drill tip when starting a hole.
Typical applications
- A center punch prepares a marked starting point for drilling. A pin punch drives pins instead; the names describe different tasks.
Advantages
- An automatic center punch uses an internal striking mechanism and does not need a separate hammer. This describes the automatic type, not every center punch.
Specifications to check
- When selecting a center punch, distinguish between hammer‑struck and automatic punches, and verify the exact tool requirements. This guide does not provide tip dimensions or striking‑force ratings.
Limitations
- A center‑punch mark does not eliminate every need for a pilot hole. For larger holes, a pilot may still be required when the drill web is wider than the indentation.
Buying considerations
Use a generic center punch for marking the center of a hole, not for driving pins. Verify the tool’s instructions match the workpiece you plan to use. This guidance does not claim the punch works with all materials.
Safety & limits
- Wear eye protection when using punches. For hammer-struck punches, use the correct hammer size; an oversized hammer can bend smaller-diameter punches.
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.
- Starrett: punch types and purposes
Reference checked 2026-10-28