Toggle Nut w/ Screw Bolt and Hook – Biondi's International Trading
100 x ROOFING HOOK BOLTS + NUT AND WASHER M8 X 80MM YZP STEEL - - Amazon.com
National Hardware N130-559 Bolt Hook 1/2 By 6 Inch With 2 Nuts and 2 Washers Zinc Plated Steel: Gate Lift Off Straps, Pintels, Bolt & Screw Hooks (038613130555-1)