The cost-efficient internal threaded anchor for fixings in non-cracked concrete. Ideal heavy duty fixing for roller shutter doors, fire doors, steelwork, security grills, machinery, pipework-duct work supports. Loose Wallbolt suitable for heavy weight fixings in concrete or brick. Segmented steel 3 piece expansion shield for even load distribution, pre-assembled ready for use. Zinc plated and passivated for corrosion resistance. Flush surface finish allows fixture to be removed. Extremely versatile, the internal metric thread makes this wallbolt suitable for a number of different head types, a traditional design widely accepted by end users. The anchor is dismantled by means of a surface-flush removal in the case of temporary anchors.