M20 Nibbed Plough Bolts ISO 5713 M20 Nibbed Plough Bolts ISO 5713 M20 x 75 Twin Nib Plough Bolt/Nut ISO 5713 Grade 12.9 M20/3860 – M20 x 75 Twin Nib Plough Bolt/Nut 12.9 Enquire M20 x 85 Twin Nib Plough Bolt/Nut ISO 5713 Grade 12.9 M20/3113 – M20 x 85 Twin Nib Plough Bolt/Nut 12.9 Enquire