Hexagonal Head Bolts & Nuts 16 X 50 Mm, Products Grade-C, M.S. Black Confirming To I S:1363-(Part-1) 2002 For Bolts; Products Grade-C, M.S. Black Confirming To Is:1363-(Part-3) 2002 For N Uts.Is: 1363( Pt.1) 1992 And Is:1363(Part.3) 1992 Size. Property Clause 4.6 Table 8 For Bolt And Proper Ty Clause 4.0 Table 9 For Nut. [ Warranty Period: 30 Months After The Date Of Delivery ] [Quantity Tolerance (+/-): 5 %Age , Item Category : Normal , Total Po Value Variation Permitt Ed: Max 8 Lacs ] ]