Hexagon Nut Size M30 - 10 To Specn. Is: 1364 (Part 3) Latest And Material To S Pecn.Is:1367 (Part-6)Latest And Zinc Electroplated To Grade A3L Of Annex 'E' Of Is:1367(Pa Rt Eleven)Latest. [ Warranty Period: 30 Months After The Date Of Delivery ] [Quantity Tolerance (+/-): 5 %Age , Item Category : Normal , Total Po Value Variation Permitt Ed: Max 8 Lacs ] ]