پیچ (انگلیسی),screw
2011-3-17 · پیچ (انگلیسی),screw. A screw is a shaft with a helical groove or thread formed on its surface. Its main uses are as a threaded fastener used to hold objects together, and as a simple machine used to translate torque into linear force. It can also be defined as an inclined plane wrapped around a shaft. Threaded fastener.