Low Profile Pancake Head Type AB Point screws for fastening architectural metal roof clips to wood. Low Profile head design fits easily under metal roof panels, preventing distortion or damage to the metal panel. Type AB sharp point can pierce thin gauge steel sheets or be used in a pre-drilled pilot hole as needed. Heavy Duty Ceramic Coated finish for excellent corrosion resistance in exterior applications. Sold 250 pcs per bag or in 4000 piece cases.