forgefix hexagon nut zp m4 bag 100 bolts nuts metals4u

these forgefix hexagon nuts are bright zinc plated for increased corrosion resistance the hexagonal shape is designed to be driven by a wrench spanner and provides excellent torque when done so zinc coatings prevent oxidation of the protected metal to create a longer lasting finish it does this by forming a barrier and by acting as a sacrificial anode if this barrier is damaged zinc oxide is a fine white dust that in contrast to iron oxide does not trigger a breakdown of the substrates surface integrity as it is formed the zinc oxide if left intact can act as a barrier to further oxidation in a way similar to the protection afforded to aluminum and stainless steels by their oxide layers hexagon nut zp m4 bag 100