... for Track Shoe/Roller/Segment/Sprocket 1.Materials: low carbon alloy steel 20MnTiB 2.Property Class:8. Standard:GB/T 1228- ... South Africa etc. Product: BoltsStandard: DIN, JIS, ANSI/SAE/ASME, ISO, BS, AS standard.Diameters Metric: from M6 to M72, Inch. ... :1240Mpa, Min:1040Mpa.Yield strengthMin:940MpaGrade8.8 or 10.9StandardDIN, ANSI, ASME, ASTM, IFI, JIS, ASThreadMetric, UNC, UNF, BSWFinishPlain, ...