hex head screws with neoprene washers

2% self-drilling screws represent a significant advancement in fastening technology, offering numerous benefits that are highly valued across various industries. By combining ease of use, versatility, and increased strength, they provide solutions that enhance efficiency and effectiveness in both professional and personal projects. As demand for reliable fasteners continues to grow, the role of self-drilling screws, especially those adhering to specific standards like the 2% classification, will undoubtedly play a pivotal role in shaping the future of construction and manufacturing practices.


...

The design of an M8 wedge anchor is simple yet effective. It consists of a threaded rod with a nut and washer, accompanied by a wedge-shaped expansion sleeve. When installed, the anchor is drilled into a pre-drilled hole in the concrete, and then the bolt is inserted and tightened. As the bolt is tightened, it pulls the wedge-shaped sleeve against the sides of the hole, creating friction and causing the sleeve to expand. This expansion locks the anchor securely in place, providing a strong hold that can withstand significant loads.

...