l-On Systems Tile Profile Fastener Type Direct Deck (min 15/32" plywood) Direct Deck (min. 19/32" plywood) Battens Entegra Flat Tile 2-10d Ring Shank Nails 30.9 38.1 17.2 1-10d Smooth or Screw Shank Nail 7.3 9.8 4.9 2-10d Smooth or Screw Shank Nails 14.0 18.8 7.4 1 #8 Screw 30.8 30.