These wing screw would be the best choice for you to solve the problem. Twisting the screw by hand, you can fasten two parts(structures)together easily.

Description:
Material: Carbon steel, zinc plated, anti-rust and anti-corrosion.
Feature: Easy to install and remove, can be used repeatedly.
Usage: Twist the screw by hand without any other tools, easy to install.
Applications: Machinery and equipment, electronic equipment, communications equipment, hardware lighting, building bridges, furniture decoration, etc.

Specification:
Product Name: Wing Butterfly Screw
Material: Carbon Steel
Finish: Zinc Plated
Thread Size: M5 x 10mm / 0.2-inch x 0.39-inch(D*L)
Thread Pitch: 0.8mm
Overall Size: 21 x 22 x 9.5mm / 0.83-inch x 0.87-inch x 0.37-inch(L*W*T)
Main Color: Silver Tone
Weight: 103g

Package Content: 20pcs x Wing Butterfly Screw