The trapezoidal thread is similar on the acme thread, apart from that the thread angle is 300. It can be created in metric dimensions; that is certainly why it can be referred to as "metric lead screw" or "metric acme screw." The insignificant diameter would be the smallest diameter of https://typesofplumbingrepair83703.blogmazing.com/28913325/the-single-best-strategy-to-use-for-different-types-of-screw-heads