Are you still bothering about the fasteners? These wing nuts would be the best choice for you to solve the problem. Twisting the nut by hand, you can fasten two parts(structures)together easily. Specifications: Size: 5/16 -18 Material: Carbon, zinc plated, anti-rust and anti-corrosion. Suitable for indoor and outdoor. Feature: Easy to install and remove, can be used repeatedly. Package Include: 20pcs 5/16 -18 Wing Nuts Size: 5/16 -18 Material: Carbon, zinc plated, anti-rust and anti-corrosion. Feature: Easy to install and remove, can be used repeatedly. Usage: Twist the nut by hand without any other tools, easy to install. Applications: Machinery and equipment, electronic equipment, communications equipment, hardware lighting, building bridges, furniture decoration, etc. UPC 746860361539 ASIN B0719827XH Brand RuiLing Color Silver Set Name 20 Pack 5/16 Wing Nuts Size Name 5/16 -18 Unit Count 20 Count Item Weight 0.16 kg Part Number 516-WT-20 Thread Size 5/16 Thread Type Unified National Coarse (Unc) Finish Types Zinc-Plated Grade Rating industrial Manufacturer Pro Bamboo Kitchen Thread Class Coarse Thread Style Unified National Coarse (UNC) Fastener Type Wing Item Diameter 0.31 inches Material Type Zinc Exterior Finish Zinc Number Of Items 20 Number of Packs 1 Number of Pieces 20 Outside Diameter 0.31 inches Screw Head Style Wing Inside Thread Size #5/16 Compatible Groove Diameter 0.31 inches