Letter punches and stamps

Which size and type you need

Letter punches and number punches come in sizes from 1 to 20 mm. The size determines the height of the character you strike. Use small sizes for chassis numbers and engine blocks. For larger markings, such as on trailers or agricultural machinery, choose 10 mm or more. You can buy them as single characters or as a set. A number punch set contains the digits 0 to 9. A letter punch set contains all letters of the alphabet. Standard quality suits regular workshop use. Extra heavy-duty quality is thicker and wider. It handles heavier hammer blows and lasts longer on hard material.

Where ordering goes wrong

The biggest mistake is ordering a single letter when you need to stamp a whole identification number. Check first what you need to mark. A full chassis number requires letters and numbers. Buy a letter punch set and a number punch set. Also check the striking direction. Some punches strike straight from above. Others have an angled head for markings in tight spots. Look at the hardness as well. A punch made of hardened tool steel keeps its sharp edge longer. Cheaper punches deform quickly and produce blurred characters. That costs you time and leaves unreadable markings.

Which standard matters

For markings that must stay legible, the quality of the steel is decisive. Hardened tool steel is the standard for professional use. The character stays sharp after thousands of strikes. Hand stamps are an alternative for thin materials. You press them into the surface without a hammer. Stencil sets are used for marking wheel bolts or other round parts. Wheel markings are made with a single punch and a guide. This way you always strike at the same distance from the edge. Choose the version that matches the material you work on. That prevents damaged punches and unreadable characters.

This category sits under striking and marking, where you will find all the tools for striking and marking workpieces.