Simpson 0.270 x 24" Strong-Drive SDWF FLOOR-TO-FLOOR Screw Kit 25ctModel No. SDWF2724 TUW Coating Material. E coat Electrocoating Length (in.) 24 Head Diameter (in.) 0. 730 Shank Diameter (in.) 0. 270 Drive Type. 5 16 in. Hex Head Type. Hex Washer Head Thread Type. Variable Thread Design Thread Length (in.) 5 Point Type. Type 17 Point Kit includes all required installation hardware: (25) Strong Drive SDWF Floor to Floor screws (25) TUW take up washers (washer is galvanized 10 ga. steel) (100) Strong Drive SD