L.H. Dottie 2WS8114 #8 x 1-1/4'' Phillips/Slotted Pan Head Sheet Metal Screw. Sheet Metal Screws are a versatile fastener with specially hardened spaced threads and sharp points, and are capable of tapping their own internal threads. Typical applications for Sheet Metal Screws include fastening light metal sheets, wood, and plastic. They are manufactured with case hardened steel and finished with a zinc plating. ASME B18.3 covers the general requirements for the dimensions and performance of Steel Sheet Metal Screws.