#8 Flat Head Self-Tapping Square Drive Sheet Metal Screws. ? These are made from Stainless Steel 18-8 with a Type A point.Note : screw listing photo for example only.Diameter : ?#8 ?Thread ?Size : ? ?15 TPILength : ?(measured overall length)Drive : ?2S SquareMaterial : ?Stainless Steel 18-8Type : ?Sheet Metal Screw, Type A Self-TappingSystem of Measurement ?: ?Inch (Imperial / US)Head Diam. (Max, Min) ?: ?Max 0.312", Min 0.285"