At its core, the structure of a bolt consists of a few key components the head, the shank, and the threads. The head is the larger, often hexagonal or square part at one end of the bolt, designed to provide a surface for the application of torque when tightening or loosening the bolt with a wrench. The shank is the long cylindrical part that spans between the head and the threads, and it determines the overall length of the bolt. The threads are helical ridges that spiral around the shank, allowing the bolt to engage with a nut or a threaded hole, enabling a strong clamping force between joined parts.

Moreover, in the HVAC sector, hex head screws with rubber washers are used to fasten ductwork and prevent air leaks. In marine applications, where exposure to saltwater can lead to rapid corrosion, the combination of durable hex head screws and rubber washers ensures reliability and longevity.

2. Vibration Absorption In mechanical applications, machines and equipment often experience vibrations during operation. Rubber washers act as shock absorbers, reducing the impact of these vibrations on the screw and the surrounding materials. This can prolong the life of both the fastener and the assembly it secures.