self drilling hex head

A self-drilling screw, as the name suggests, eliminates the need for a pre-drilled hole. The unique of these screws is designed with a cutting edge that drills into the material while the thread immediately follows, securing the pieces together. The 2 in 2 self drilling screws typically refers to the gauge of the screw, which denotes its diameter. Smaller numbers indicate thicker screws, making a 2 gauge screw a substantial and robust option for heavy-duty applications.

...

In industrial applications, 3 8 full threaded rods are commonly used in various scenarios3 8 full threaded rod. They are frequently employed in structural connections, such as bolting together steel beams in construction projects. Their robustness and versatility also make them suitable for machinery and equipment assembly, where they hold parts securely and withstand significant stress loads. Furthermore, they find usage in plumbing and electrical installations, where they act as anchor bolts, securing pipes or conduits to walls or foundations.

...