In the realm of fasteners, white wafer head self-drilling screws are a versatile and efficient solution for a variety of construction and repair applications. These screws are notable for their unique design, enabling them to drill into materials without the need for pre-drilling a pilot hole. This feature saves time and enhances the efficiency of the installation process, making them a favored choice among contractors and DIY enthusiasts alike.

2. Thread Type M20 bolts feature a coarse pitch thread, which allows for easy and quick installation. The standard thread pitch for M20 is usually 2.5 mm, which balances ease of adjustment with holding power.

Expanding plastic screw anchors are indispensable tools in both DIY projects and professional applications. Their ability to provide a strong, secure hold in various materials makes them a trusted choice among builders and homeowners alike. With a wide range of types available, it's essential to select the appropriate anchor for the specific weight and application needs. By understanding their features and benefits, users can ensure successful installations that will stand the test of time. Whether you are embarking on a simple home improvement project or a larger construction endeavor, expanding plastic screw anchors are sure to deliver reliability and performance.