System HV, bolting assemblies for preloading (screw+nut+double washer) UNI EN 14399-4 and 5 (Klass K1 or K2 with information about torque on the packaging) Kl. 10.9 hot dip galvanized M30x100: 154 pcs. M30x90: 154 pcs. M27x80: 40 pcs. M24x85: 336 pcs. M24x80: 730 pcs. M24x75: 40 pcs. M24x70: 40 pcs. M24x65: 230 pcs. M20x80: 87 pcs. M20x75: 375 pcs. M20x70: 89 pcs. M20x60: 650 pcs. M20x65: 92 pcs. M16x85: 12 pcs. M16x65: 24 pcs. M16x55: 10 pcs. M16x50: 540 pcs. The items will be needed for builting chimneys