Hexagonal Head Bolt And Nut Of Product Grade 'C' , Size - M20 X 120 Mm, To Drawing / Speci Fication 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 ] ]