1. Are you still bothered 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.
2. Material: Zinc alloy, zinc plated, anti-rust, and anti-corrosion. Suitable for indoor and outdoor.
3. Feature: Easy to install and remove, can be used repeatedly.
Product Name: Wing Nuts
Material: Zinc Alloy
Finish: Zinc Plated
Female Thread Size: M4x4.5mm; M5x4.8mm; M6x5.5mm; M8x6mm(D*L)
Overall Size: 17.5 x 9.5 x 7mm; 21 x 11 x 8mm; 25 x 13 x 9.5mm; 27 x 13 x 11mm (L*H*D)
Main Color: Silver Tone; Bronze Tone
20pcs x Wing Nuts