#10 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: #10 ?Thread Size: 12 TPILength: (measured overall length)Drive: 2R Square RobertsonMaterial: Stainless Steel 18-8Type: Sheet Metal Screw, Type A Self-TappingSystem of Measurement: Inch (Imperial / US)Head Diam. (Max, Min): Max 0.362", Min 0.333"