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Metal expansion nuts serve as a vital component in ensuring mechanical integrity and stability in various applications. Their unique design allows for effective load management, self-locking capabilities, and adaptability to different materials and conditions. As industries continue to evolve, the role of metal expansion nuts will undoubtedly expand, contributing to the safety and efficiency of structures and machinery. Whether in construction, automotive, or other fields, understanding these fasteners' advantages can enhance engineering practices and promote better design solutions.

Rubber washers are circular disks made from rubber or synthetic elastomers, often used to create a seal or cushion between two surfaces. When paired with hex head screws, these washers serve to enhance the effectiveness of the fastener by providing a barrier against moisture, dust, and other elements that can lead to degradation over time. This is particularly important in outdoor applications or environments where exposure to the elements is a concern.