Rigging screws, also known as turnbuckles, are essential in rigging and tensioning systems, categorized by key factors. Rigging screw Types include jaw and jaw, eye and eye, or hook and eye turnbuckles, each offering specific attachment options. Thread direction, either left-hand or right-hand, determines tightening direction. Materials like stainless steel, carbon steel, or alloy steel are chosen based on strength and corrosion resistance needs. Load capacity, size, body configuration, finish, and safety features influence suitability. Specialized turnbuckles, like open-body or high-temperature variants, address unique requirements. Certifications ensure compliance with industry standards. Proper selection and maintenance, considering these categories, are vital for safe and efficient rigging and tensioning in construction, maritime, and suspension applications.