... side Steel-structured high-strength torsion components for bolted connections with CE certifation 1.high ... supply various dimension track shoe bolt ,which are used for caterpillar, komatsu, hitachi, kobelco, daewoo, kato, hyundai ... .13/64 M19*56 3/4-2.13/64 M20*57 25/32-2.13/64 M22 ... (TC bolt) Torshear type high strength bolts for steel structureMaterialAlloy steel ,carbon steel, stainless steel ...