Tenders for Supply of Hexagonal Head Bolts & Nuts 12 X 40 Mm, Hexagonal Head Bolts & Nuts 12 X 40 Mm, Products Grade-C, M.S. Black Confirming To Is:1363-Part-1 2002 For Bolts; Products Grade-C, M.S. Black Confirming To Is:1363-Part-3 2002 For Nuts. Property Clause 4.6 Of Table 8 For Bolt And Property Clause 4 Of Table 8 For Nut..