Description

The E651 is one of Dormer’s range of Combi Taps – a combined drill and tap in a single tool, which first drills the hole with the twist drill end of the tool and then threads the same hole with the middle of the tool, which is a tap. As the drilling part and the threading part are both on the same tool, you can be certain the hole drilled is the correct size for the thread you create. E651 Combi Taps are manufactured to a Dormer standard, based on the International Standards Organization and come in a range of sizes to produce Unified Coarse threads (UNC) from 6-32 to 12-24, and 1/4 to 5/8 inch. The steam tempering on the tools stops workpiece material from sticking to the cutting so you get a cleaner, more accurate finish on the threads, whilst the High Speed steel used in manufacture gives you good results and longer tool life in a variety of materials. The ability to use a single tool to both drill and thread shallow through holes by both machine and by hand reduces the number of tools needed, so making the E651 an efficient choice.