EN 14399-9 High-strength structural bolting assemblies for preloading - Part 5: Plain washers sherardized to EN 13811 class 30 M 16, 3548 pcs. M 20, 199 pcs. M 24, 1908 pcs. M 30, 1054 pcs. M 36, 1760 pcs. M 27, 192 pcs.