... 6S3419 SQUARE NUT 1/2'-20UNF(19X15) 7K2017 SQUARE NUT 9/16'-18UNF(22X18) 1M1408 SQUARE NUT 5/8'-18UNF(25X18) 1S1860 SQUARE NUT 3 ... of products, which are according to the international standards including ANSI, ASTM (America), DIN (Germany), GB (China), UNI, ... :1240Mpa, Min:1040Mpa.Yield strengthMin:940MpaGrade8.8 or 10.9StandardDIN, ANSI, ASME, ASTM, IFI, JIS, ASThreadMetric, UNC, UNF, ...