Which option is NOT a joint type?

Which option is NOT a joint type?

• A. Fillet
• B. Butt
• C. Corner
• D. Tee

Answer: (A)

In welding, a joint type describes how two pieces of metal are positioned relative to each other when joined—common examples are butt joints (end-to-end), corner joints (meeting at a corner), and Tee joints (one piece joining the side of another). A fillet isn’t a joint configuration; it’s a weld shape used to fill a corner or edge gap on those joints. So while you might use a fillet weld on a corner, butt, or tee joint, fillet itself isn’t describing how the pieces are joined. That’s why the correct choice is fillet. The other options — butt, corner, and tee — are actual joint types.

In welding, a joint type describes how two pieces of metal are positioned relative to each other when joined—common examples are butt joints (end-to-end), corner joints (meeting at a corner), and Tee joints (one piece joining the side of another). A fillet isn’t a joint configuration; it’s a weld shape used to fill a corner or edge gap on those joints. So while you might use a fillet weld on a corner, butt, or tee joint, fillet itself isn’t describing how the pieces are joined. That’s why the correct choice is fillet. The other options — butt, corner, and tee — are actual joint types.