Hexagonal Head Bolt With Nut Of Product Grade 'C', Size: M20 X 75 Mm, To Drawing / Specifi Cation Bolt To Is:1363(Part-I) / 2002, Property Class- 4.6 And Nut To Is:1363(Part Iii)/2002, Property Class- 5 . [ Warranty Period: 30 Months After The Date Of Delivery ] ]