What does ACME Metric Lead screw mean? The designation TR8*8 means a Trapezoidal Metric lead screw with 8mm diameter and 8 mm pitch and a thread angle of 30 degrees. ACME means a thread angle of 29 degrees. So what kind of lead screw is beeing sold by the openpartsbuildstore ( and all the others)?? Thanks in advance Michael Here a link Metric ACME Lead Screw - A Common Engineering Error Most People Make for Trapezoidal Metric Threads
Openbuilds leadscrews are metric trapezoidal. See link below for earlier discussion. 8mm Lead Screw ACME vs Trapezoidal Alex.
Thanks for the information and the link. I searched for such information but did not find it. Michael
