Professional nut serts for commercial or occasional use 3mm 4mm 5mm and 6mm Nut sert pack M3 M4 M5 and M6 Nut sert pack 200pc mixed size Rivet Nut Assortment Suitable for use with most materials that cannot be tapped or welded Dual action nut sert can be used as blind fasteners or screw anchor Aluminium nut serts so won’t rust or corrode Nut serts provide a strong thread in thin materials that cannot be tapped Requires access to only one side of the work piece, nut can be installed after painting or other finishing operations to provide a robust screw anchor therefore eliminating problems of welding and material distortion Once installed they are permanently attached to the mating material, allowing the associated nut to be removed in service without risk of the fastener becoming dislodged Strong threads at least 6 turns, even on thinner materials Permanent and reliable fastener Serrations / grooves on the body to help prevent rotation Large flange reinforces the hole in thin materials and increases the pull out resistance Suitable for use with most nut serts tools (we also have these available in our shop) This listing is for a pack of 200, 50 each of M3 M4 M5 and M6 nut serts SPECIFICATIONS • Thread diameter -3mm, 4mm, 5mm and 6mm • Pack size - 200pc (50pc of each nut sert)