Bolt Ms Hex Head M 20 X 100Mm With Nut. Specn: Bis Specification No: Steel, Is-1363 Pt-I/ 2002 For Bolt Or Latest And Is- 1363 Pt-3/2002 Or Latest For Nut, Property Class 4.6 For Bolt And 5 For Nut. [ Warranty Period: 30 Months After The Date Of Delivery ] ]