Hex Head Bolt With Thread M20,Nominal Length 180Mm And Property Class 4.8,Conforming To Is :1363(Part-1):2002/Iso:9549(1980) Provision Of Hole With Hexagon Nut With Thread M20 And Property C Lass 5,Conforming To Is:1363(Part-3):2002/ Iso-4034-1999 (4Th Revision). [ Warranty Period: 30 Months A Fter The Date Of Delivery ] ]