Triangle Fastener Corp., Cleveland, offers Blazer Ultra self-drilling fasteners, specialty designed for better installation. The #10 Hi-Hex has a 30 percent higher hex height over standard #10 drill screws providing better socket fit. The #12 Pilot, with a 20 percent longer pilot section, allows the fastener to complete the drilling operation before thread engagement. This eliminates “jacking” of the materials. The Lo-Profile has a pancake head with a #2 square drive for stability. The head is 12 percent thinner than round washer-head fasteners, providing additional clearance.