butterfly expansion anchors

Hexagonal head bolts come in a wide range of sizes and materials to suit different applications. The size of a bolt is typically specified by its diameter and length, with the diameter measured in millimeters (mm) or inches (in). Common materials used for hexagonal head bolts include carbon steel, stainless steel, alloy steel, and aluminum. Each material offers its own set of advantages and disadvantages, depending on the specific requirements of the application.

...

One of the primary benefits of 10 x 1 tek screws is their ease of use. Unlike traditional screws that require pre-drilled holes, these screws can be used directly on materials, saving time and labor costs. This efficiency makes them ideal for fast-paced construction environments where time is critical. Additionally, their self-tapping nature ensures a tight fit and reduces the risk of stripping the material, which can often occur with standard screws.


...