Simpson #10 x 3/4" T20, Clear Zinc Flat Pan-Head Screw 5000-PkModel No. FPH34B1018 5K Coating Material. Clear Zinc Coating Screw Size. #10 Length (in.) 3 4 Head Diameter (in.) 0. 340 Drive Type. T20 6 Lobe Head Type. Flat Pan Head Thread Type. Tapping Threads TPI. 18 Point Type. Sharp Point Packaging Qty. 5000 The FPH Flat Pan Head screw is designed specifically for precision steel roll forming technology (dimpled steel stud fastening), offered by manufacturers such as FRAMECAD, Howick, Arkitech, Pinnacle