The body of a hex head bolt features external threads that engage with a corresponding nut or a tapped hole, allowing for a secure and adjustable connection. Depending on the intended application, these bolts can be made from various materials, including steel, stainless steel, and even plastic, each offering different levels of strength, corrosion resistance, and weight considerations.

2. Masonry Anchors Specifically designed for use in concrete or brick, masonry anchors offer significant holding power. They require a pre-drilled hole, and as the anchor is inserted, it expands, creating a tight fit within the masonry.