Description:Material: Thumb screws are made of carbon steel, are rust and corrosion-resistant, durable materials that can be used indoors and outdoors, wear resistance, good fastening function.Feature: Fine workmanship, smooth surface without burrs, fine and deep threads, uniform force, not easy to slip, strong and durable.Easy to Install: The flat design of the screw head allows you to easily tighten it by hand without the need for other tools during installation, making the installation process simple and convenient.Application: Widely used in home appliances, electrical appliances, machinery, instruments, and other DIY projects. They can be used to fix panels, furniture, lampshades, musical instruments, mechanical components, electronic equipment, communication equipment, decorative products, etc.Specification:Material: Carbon SteelThread Size: 1/4-20 x 1" (D*L)Head Size: 20x3.8mm/0.79"x0.15" (D*T)Package Content: 5pcs x Thumb Screws
