Supply Of Hex Head Bolthex Head Bolt, Hex Head Bolt With Thread M20, Nominal Length 50Mm And Property Class 4.8, Conforming To Is- 13 63 ( Part-1 ) :2002 / Iso-4016:1999 ( 4Th Revision ) With Hexagon Nut With Thread M20 And Property Class 5, Conformi Ng To Is:1363 ( Part-3 ) :2002 / Iso-4034-1999 ( 4Th Revision ) . [ Warranty Period: 30 Months After The Date Of Deli Very ] , Hexagon Head Bolt With Thread M 20, Nominal Length 65 Mm And Property C Lass 4.8, Conforming To Is:1363 ( Part-I ) :2002 / Iso-4016:1999 ( Fourth- Revision ) With Hexagon Nut With Thread M20 And Property Class 5, Conforming To Is:1363 ( Part-3 ) : 2002 / Iso-4034- 1999 ( Fourth Revision ) . [ Warranty Period: 30 Months After The Date Of Delivery ] , Hexagon Head Bolt With Thread M20, Nominal Length 75Mm And Property Class 4.8, Conforming To I S:1363 ( Part-1 ) 2002 / Iso-4016:1999 ( Fourth- Revision ) With Hexagon Nut With Thread M20 And Property Class 5, C Onforming To Is 1363 ( Part 3 ) :2002 / Iso 4034:1999 ( Fourth Revision ) . [ Warranty Period: 30 Months After The Dat E Of Delivery ]