Need a reliable Acme tap for heavy-duty threading jobs? This high-speed steel tap is built for machining and mechanical applications. It's a 3/8 inch size with 12 threads per inch (TPI), right-hand thread. Acme threads are known for their strength and are commonly used in machine traversing motions, CNC equipment, jacks, valves, and other high-load situations. This is a single-pass tap designed for manual hand tapping - just use it with a standard tap handle. It's made from durable high-speed steel with a bright finish, so it resists wear and provides clean, precise threads. The tap comes in a labeled plastic storage holder, making it easy to identify and keep organized in your toolbox. Whether you're a machinist, mechanic, or serious DIYer working on machinery repairs or custom projects, this Acme tap delivers the performance you need for tough threading tasks.