What is the length of the thread on a 1" piece of schedule 40 gas pipe?

The length of the thread on a 1-inch piece of schedule 40 gas pipe is indeed 7/8 inch. This standard is based on the established dimensions and threading specifications for pipes used in plumbing and gas installations.

For a 1-inch nominal pipe, the actual outer diameter is slightly larger, specifically around 1.315 inches. However, when it comes to the threading portion, the typical length for the threads is standardized, and in this case, it is 7/8 inch for a 1-inch diameter pipe. Recognizing these specifications is crucial for ensuring proper connections and fitting compatibility in gas piping systems, which need to adhere to strict safety and construction standards.

Understanding the specifications of gas pipes, including the lengths of threads, is essential for professionals in the HVAC and plumbing fields, as it affects both the installation and the integrity of gas distribution systems.