Lag Rod

Definition

A large diameter rod with a square or hexagonal head.

Purpose

Lag rods are used in construction and heavy-duty applications to provide strong, secure connections. They are often employed in wood construction, securing large structures, and applications where high-strength fasteners are needed.

Examples of Use

• Wooden beams: Lag rods are used to connect large wooden beams in construction projects, providing robust and reliable joints.
• Heavy equipment assembly: In assembling heavy machinery, lag rods ensure components are tightly fastened.
• Bridge construction: Lag rods help in securing large structural elements in bridge construction.

Related Terms

• Lag Screw: A screw with a similar large diameter and a square or hexagonal head, used in heavy-duty fastening.
• Anchor Bolt: A bolt used to attach structures to concrete.
• Threaded Rod: A rod with continuous threading, used for tension and compression applications.

Notes

• Proper tools, such as wrenches or sockets, are required to install lag rods due to their size and the torque needed.
• Pre-drilling holes can make the installation of lag rods easier and prevent wood splitting.
• Selecting the appropriate size and length of lag rod is crucial for the stability and safety of the construction.