What is the purpose of a lag screw?

• What are Lag Screws?

Lag screws, also known as lag bolts, are heavy-duty fasteners designed for securely joining wood or wood to metal. These screws feature a hexagonal head and a sharp, pointed tip, allowing for easy insertion and exceptional holding power. They are commonly used in applications where high strength and durability are required, such as in deck construction, timber framing, and heavy-duty furniture assembly.

• Types of Lag Screws

There are various types of lag screws available, each designed for specific applications. Common variations include hex lag screws, which feature a hexagonal head for easy installation with a wrench or socket, and structural lag screws, which are engineered for heavy-duty load-bearing applications. Additionally, stainless steel lag screws are ideal for outdoor or corrosive environments, offering superior resistance to rust and corrosion.

• Benefits of Lag Screws

Lag screws offer several key benefits that make them a popular choice for construction and woodworking projects. Their coarse threads provide excellent grip and holding power, ensuring a secure and reliable connection. Additionally, their robust construction and high-strength materials make them suitable for demanding applications where standard screws may not suffice. Furthermore, lag screws are versatile and can be used in a wide range of materials, including wood, metal, and composite materials.

To use lag screws effectively, it is generally recommended to pre-drill pilot holes to prevent the wood from splitting, especially when working with hardwoods or when using larger diameter screws. Additionally, the correct tool, such as a wrench or a socket wrench, is needed to tighten the screw, as lag screws typically have a hexagonal or square head designed to fit these tools.

FASTO focuses on production of precision hardware such as Screws, Bolts, Nuts, Washers, Rivets, Thread rods, Nails, Anchors and Tools, etc. If you are interested in our fasteners, please feel free to contact us for more information.

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