The weld nut you're referring to is commonly known as a "Plain Round Base Spot Weld T-Nut." These fasteners have a distinctive "T" shape, featuring a full circular base and a threaded barrel that rises vertically from the center of the base at a 90-degree angle. They come in various thread sizes, including metric options, and are available in two different materials. OneMonroes offers a low carbon spot weld T-nut, typically with a plain finish unless a different finish is specified. Additionally, this type of weld nut is also accessible in stainless steel material.

The plain round base of this weld nut is flat on both sides, with no protrusions or projections. This design makes it particularly well-suited for both through-the-hole and flush-mount applications because the absence of projections ensures a proper mating between the fastener flange and the base material. This feature contributes to a secure and reliable fastening solution for a wide range of applications.