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So you’ve got a reverse-thread bolt that needs fixing, or you’re working on a project that calls for left-hand threads—this 3/8-24 UNF tap and die set has your back.
The tap is made from 6542 high-speed steel, which is tough stuff for cutting clean threads in materials like copper, brass, A3 steel, aluminum, and cast iron.
Straight flute design works best for through holes or shallow blind holes, but skip deep blind holes with this one.
The die is alloy tool steel, nice and hard, perfect for chasing or repairing external threads.





4.8 out of 5