Tag Archives: UNC
Thread Pitch for 1-5/8″ BoltsWhat is the Unified National Coarse thread pitch for a 1-5/8” diameter bolt?
Currently, the American Society of Mechanical Engineers (ASME) specification B 1.1 does not define a “standard” Unified National Coarse (UNC) thread pitch for 1-5/8” diameter bolts (or 1-7/8” for that matter). The “pseudo standard” coarse thread that is often used in the industry is 5-1/2 threads per inch. The 8UN (eight threads per inch) series... Read more