Easy Removal of Damaged Phillips-Head Screws
July 11, 2011
Cross-head or Phillips screws have a plus-shaped slot in the head and are driven by a cross-head screwdriver, designed originally in the 1930s for use with mechanical screwing machines. They were intentionally made so the driver would ride out, or cam out, at a certain force to prevent over-tightening. After a piece of equipment has […]