A Heavy Duty Galvanised Socket Countersunk Screw to give a high tensile grade 10.9 flush finish. Supplied complete with a galvanised hexagon full nut.
Hot dipped spun galvanised to EN ISO 1461:2009.
Always ensure that compatible corrosion resistant nuts & washers are used, i.e. do not use galvanised nuts & washers with stainless steel studding or vice versa.