What is the effective number of threads of a 1/2" diameter screwed steel pipe?

The effective number of threads for a 1/2" diameter screwed steel pipe is determined based on standard plumbing codes and thread specifications for pipe fittings. A 1/2" pipe typically has a nominal diameter of 1/2", but the actual diameter is slightly larger due to the threading process.

For a 1/2" pipe, the standard thread count is often specified as 14 threads per inch (TPI). This means that within one inch of length, there are 14 distinct threads. This measurement reflects the close tolerance required for screwed connections in piping to ensure strength and leak resistance.

Thus, when tasked with identifying the effective number of threads for a 1/2" diameter screwed steel pipe, 14 is indeed the correct value, as it aligns with the industry standards for this size piping and its configurations.