Supply of Hex. Head Bolt And Nut, M12 X 50 Mm, Product Grade C, M.S., Black Matl. & Spec. : Is: 1363 Part - 1/2019 5Th Rev. And Is: 1363 Part- 3 / 2018 5Th. Rev., Property Class 4.6 For Bolt And Property Class 5 For Nut. Warranty Period: 30 Months After The Date Of Delivery