ROYAL Z Bar cast-iron wing nuts deliver fast, dependable connections for concrete wall-forming systems. Designed to glide effortlessly along high-speed Dywidag threads, they can be spun on by hand and locked tight with a simple swing of a hammer. Choose between a vibration-resistant single-arm style or a balanced double-arm style for easier turning during installation and removal. Features + Benefits: Rapid Setup: Free-spinning action on Dywidag threads speeds up positioning and alignment. Hammer-Tight Leverage: Arm length is optimised so a hammer handle can be used for quick, secure tightening. Selectable Arm Designs: Single arm minimises movement under vibration, while double arms offer smoother, balanced rotation. Heavy-Duty Build: Cast-iron construction withstands repeated job-site impacts and harsh conditions. Product Uses: Securing Z bars and tie rods in concrete wall formwork and shuttering applications. Pack Size: Supplied individually or in bulk cartons; available in single-arm and double-arm variants.