For field-threaded rigid metal conduit, what taper is used on a standard cutting die?

For field-threaded rigid metal conduit, what taper is used on a standard cutting die?

• A. 4
• B. 8
• C. 16
• D. 12

Answer: (C)

Thread pitch is what the cutting die uses when creating field threads on rigid metal conduit. For field-threaded RMC, the standard cutting die is set to 16 threads per inch, meaning the threads are fairly fine and match the fittings designed for this conduit. This pitch ensures the threads engage fully with couplings and locknuts, giving a proper, leak-resistant connection. Coarser options would not mesh correctly with standard fittings, leading to poor fit or leakage. So the standard cutting die produces 16 threads per inch.

Thread pitch is what the cutting die uses when creating field threads on rigid metal conduit. For field-threaded RMC, the standard cutting die is set to 16 threads per inch, meaning the threads are fairly fine and match the fittings designed for this conduit. This pitch ensures the threads engage fully with couplings and locknuts, giving a proper, leak-resistant connection. Coarser options would not mesh correctly with standard fittings, leading to poor fit or leakage. So the standard cutting die produces 16 threads per inch.