Heavy-duty anchor bolt fixing featuring a zinc yellow passivated finish for enhanced corrosion resistance. Designed with a tough and reliable construction, it includes a four-way expansion shield that provides strong and secure anchorage. The special retaining spring ensures the encapsulation of the wedge during expansion. These anchor bolts are ideal for fixing racking, machinery, trunking, pipework, and switchgear, and are also suitable for external applications, including fencing and joinery structures.