'ACME' is really a phrase that refers to a selected thread type. All ACME screws also are lead screws but not all lead screws are ACME screws. The ACME thread common is accompanied by distinct classes including 2G, 3G, 2C and so forth. Flathead screwdrivers are commonly employed for screws https://types-of-roof-damage82581.tusblogos.com/29382119/5-tips-about-what-is-a-lead-screw-you-can-use-today