What type of bolt was used to anchor the pipe in the illustration?

• A. U-Bolt
• B. Hex Bolt
• C. Lag Bolt
• D. Stud Bolt

Answer: (A)

The determining idea is how pipes are secured: a curved bolt that wraps around the pipe and clamps to a surface. That shape is exactly what a U-bolt provides—its U-shaped body fits around the round pipe, with the threaded ends passing through a plate and tightened with nuts to hold the pipe firmly in place. This setup makes it ideal for anchoring a round pipe to a wall or bracket.

The other options don’t fit how a pipe is typically anchored: a hex bolt is a straight fastener with a hex head, used for general fastening; a lag bolt is designed to screw into wood; a stud bolt is a straight threaded rod used to connect equipment, not to wrap around a pipe.