This app includes: Machine Screws and Materials - T Head Bolt, Countersunk, Captive Bolts - Barrel Nut and Bolt, Double Ended Stud Bolts, Toggle Bolt, Hook Bolt, Coupling Nut and Grub Screw - Anchor Bolts, Self Tapping Screws, Integral Seal Screws, Allen Bolts - Wingnuts, Nylon Nuts and Bolts, Anti-theft Machine Screws, Self Drilling Machine ...