THE 2-MINUTE RULE FOR TYPES OF SCREW HEADS

A U-generate screw has a helical thread with an angle acute adequate to become driven by a hammer or pressure from an arbor press, and therefore features a domed head without having means of turning it.[90] they are most often pushed into plastics having a pre-drilled pilot gap. See also[edit] They can be made use of the place endurance is the pri