At Trading Depot there is an assortment of rawlnuts and rawlocks that come in a number of sizes by leading manufacturer Rawlplug.
Rawlplug rawlnuts are suitable for use in most construction materials, such as thin sheet metal and concrete; they are resistant to vibration and corrosion with a waterproof seal.
Also available are Rawlok hexagonal nuts which are an all purpose through fixing for medium weight applications in brick, block and masonry.