Lag screws (often called lag bolts) are heavy-duty fasteners designed for joining heavy lumber or other materials that bear intense loads. They are commonly used in structural wood framing, deck building, and machinery installation.

SS304 is ideal for standard outdoor applications with good rust resistance. SS316 contains molybdenum, making it marine-grade with superior resistance to chlorides and corrosion in coastal or highly chemical environments.

Yes. Because of their thickness and thread design, drilling a pilot hole is essential to prevent wood splitting and to allow the lag screw to be driven smoothly without excessive torque.

Zinc-plated eye lag screws offer basic resistance to rust and are typically recommended for indoor or sheltered outdoor environments. For high moisture or coastal exposure, stainless steel options are highly recommended.

Black oxide provides a sleek, non-reflective dark finish with mild corrosion resistance. E-coated lag screws utilize an electrophoretic paint process to offer premium protection against harsh weather and environmental wear.