M12 x 60 mm Hex Bolt - Galvanised Mild Steel DIN931 Galvanised - A duller finish than BZP, typically 50 microns thick covering of Zinc and therefore provides much more protection suitable for many out door applications. To allow for this layer you should use tapped oversized nuts Thread Pitch - 1.75 mm b - 30 mm s - 19 mm k - 7.32 mm (min) L - 60 mm DIN931
