Simpson #10 x 1-3/4" PPHD SHEATHING-TO-CFS Screw T25, Yellow Zinc 4000-PkModel No. PPHD134B1016 4K Coating Material. Yellow Zinc Coated Screw Size. #10 Length (in.) 1 3 4 Head Diameter (in.) 0. 323 Drive Type. T25 6 Lobe Head Type. Flat Head Thread Type. Fine Threads TPI. 16 Max. Grip Length (in.) 0. 793 Point Type. Pilot Point Point Size. 5 Packaging Qty. 4000 The Strong Drive PPHD Sheathing to CFS screw is designed to drive through sheathing materials and into cold formed steel (CFS) using its long #5 drill point. Key