self drilling screw dia 6 x 20 mm truss screw

The black coating on these screws adds an additional layer of utility. Typically, this coating is a form of zinc plating or a powder coat finish, which serves two primary purposes. Firstly, it enhances the screw's corrosion resistance, protecting it from rust and wear, especially in outdoor or humid conditions. Secondly, the black color offers a sleek, unobtrusive appearance, making it suitable for applications where a discreet fastener is desired.

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One of the key advantages of white wafer head self-drilling screws is their ease of use. Because they create their own pilot holes, there is no need to pre-drill before installing the screws. This saves time and effort, making them a convenient option for many users. Additionally, the wafer head design of these screws provides a large surface area for driving, which helps to prevent the screw from slipping or stripping during installation.

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