What term describes the thickness of the two pieces of material that are going to be fastened together?

The term that describes the thickness of the two pieces of material that are going to be fastened together is referred to as "Grip." In the context of fastening techniques, "grip" specifically relates to how much material a fastener must penetrate to create a secure joint. This is essential for determining the appropriate length of fasteners and ensuring their effectiveness in holding the materials together. Understanding grip helps in selecting the right fastener type and length to accommodate variations in material thickness, thereby ensuring structural integrity and safety.

The other terms such as length, width, and depth refer to measurements of physical dimensions but do not specifically pertain to the thickness of the materials being fastened. For instance, length relates to how long a material is, width refers to the side-to-side measurement of a material, and depth often pertains to the measurement from top to bottom or how far down a fastener goes into a material. However, none of these terms capture the critical aspect of thickness that “grip” does in fastening applications.