High-strength structural bolting assemblies in galvanized steel 69 screws EN14399-10 M24x60 327 screws EN14399-10 M20x60 5 screws EN14399-10 M20x50 69 nuts EN 14399-10D M24 332 nuts EN 14399-10D M20 138 washers EN 14399-5 M24 664 washers EN 14399-5 M20 37 washers DTI EN14399-9 M36.0 93 washers DTI EN14399-9 M30.0