Arvid Nilsson 85808000 is a DIN 6796 conical spring washer for M8 fasteners (8.4 x 18 x 2 x 2.6 mm) with FLZN480H flake-zinc coating for high corrosion resistance. The conical geometry maintains bolt preload and locks the joint against vibration-induced loosening. Supplied in packs of 1000; country of origin Sweden. Typical applications include structural bolting, machinery assembly and heavy equipment.