full thread carriage bolts
2. Wall Fixtures When mounting shelves, picture frames, or mirrors to walls, 25mm screws are often the ideal choice. Their length allows them to anchor securely into wall studs or, when using appropriate anchors, into hollow wall materials.
2. Concrete Shear Strength In addition to the load capacity, the diameter of the anchor bolt affects the shear strength of the concrete. A larger diameter bolt creates a greater surface area for bonding with the concrete, which contributes to enhanced shear resistance.