Hexagon Head Screw Size M16 X 55 - 10.9 To Specn. Is:1364 (Part-2) Latest And Material To Specn.Is:1367 (Part-3)Latest And Zinc Electroplated To Grade A3L Of Annex "E " Of Is:1367(Part-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 ] ]