M20 Bolt Length 85 Mm With One Hex Nut, One Castle Nut And One Steel Split Pin, As Per I S: 1364 (Part-1) Grade A For M 20 Bolt Property Class 5.6 , Is:1364 (Part-3) Grade B For Hex Head Nut Pro Perty Class 5, Size Dia 4 X 36 Mm Is:549/2005 For Split Pin, Is:9549/1980 For Hole Of Nut And Is: 2232:19 67 Grade - Precision (P) As The Bolt Is Of Grade 'A' For Castle Nut. [ Warranty Period: 30 Months After T He Date Of Delivery ] [Quantity Tolerance (+/-): 5 %Age , Item Category : Normal , Total Po Value Variation Permitted: Max 8 Lacs ] ]