Ideal for use in connector applications where more control is desired or using a hammer is inconvenient, 1/4" hex head with 0.37"-dia. integrated washer reduces cam-out and is stamped with the Simpson Strong-Tie "" sign and the fastener size for easy identification after installation, Shank is specifically designed to match the fastener holes in Simpson Strong-Tie connectors, Patented serrated threads and sharp point make driving easy, Optimized heat treating for ductility and strength, Hex driver included