M6 RIVET NUT SEMI-HEXAGONAL FLAT HEAD A4 STAINLESS STEEL/1.4404/316 SS sheet thickness: 3mm 1000/ 10 000/ 100 000 pcs M8 RIVET NUT SEMI-HEXAGONAL FLAT HEAD A4 STAINLESS STEEL/1.4404/316 SS sheet thickness: 3mm 1000/ 10 000/ 100 000 pcs