Hexagon head bolts, fully threaded, ASTM A325 M20*60: 1861 pcs. M24*70: 1908 pcs. M24*80: 1589 pcs. M24*100: 233 pcs. Hexagon nuts ASTM A563 M24: 3497 pcs. Flat washers ASTM A436 M20: 1862 pcs. M24: 6994 pcs. Material: Weathering Steel (Corten) Please include 3.1 certificate and indicate delivery times