Which of the following is a characteristic of a spot weld?

A spot weld is a specific type of weld that effectively joins two overlapping metal pieces together at localized points. This process typically involves applying heat and pressure through electrodes, which fuse the materials precisely where they are in contact. This characteristic is vital in many applications, especially in manufacturing, as it allows for the rapid assembly of components without affecting the surrounding material significantly.

In contrast, other methods such as continuous welds might connect the materials along a longer seam, while the use of filler metal is more relevant in techniques like MIG or TIG welding rather than spot welding. Moreover, spot welding generally requires clamping to hold the pieces together during the welding process, ensuring a strong joint at the points of fusion. Thus, the unique characteristic of localized joining distinctly defines what a spot weld is within welding practices.