M4.2-1.41 X 20mm Hex Head Sems Tapping Screws, Hex Head Sems Tapping Screw , Phosphate , M4.2-1.41 x 20mm (#8 x 25/32"), Washer O.D.: 16mm (5/8") , 7mm Hex , Replaces GM: 1640810, 11503892, 11500434