M20 Full Nuts Galvanised [Metric Grade 6/8]

• These hexagon nuts are galvanised for increased corrosion resistance.
• The hexagonal shape is designed to be driven by a wrench (spanner) and provides excellent torque when done so.

Galvanised 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. Galvanising is a plating that (in contrast to iron oxide) does not trigger a breakdown of the substrates surface integrity as it is formed. The galvanising, 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.