... kato, hyundai, samsung, sumitomo, mitsubishi, etc.Specifications Size from: M5 - M42 Length: 10mm-200mm Hexagon head bolt: ... , BS, AS standard.Diameters Metric: from M6 to M72, Inch. from 1/4" to 3"Length : ... . Can be from TB1/2-TB1.1/4 for English system, from TB12-TB30 for metric system.8- ... TC bolt) Torshear type high strength bolts for steel structureMaterialAlloy steel ,carbon steel, stainless steel ...