Shower arms generally fit most shower heads due to the standardized 1/2 inch NPT threading, which is common across many regions. However, exceptions exist, particularly with proprietary designs or older plumbing systems. It’s essential to verify the specifications of both the shower arm and shower head before purchasing. Compatibility also depends on the design, length, and angle of t... https://tapron.ie/blogs/news/do-shower-arms-fit-all-shower-heads