Threaded Bar - Zinc Plated

Threaded bar, or rod, also known as stud or studding is a steel bar with thread extending across the entire length.  They are designed to be used in tension applications and can be cut to the desired length for any application.  They are available in lengths from 1 metre to 3 metres, and longer lengths can be made with the use of thread connectors.  

There are two grades of threaded bar, 4.8 and 8.8, relate to the tensile and shear strength, with the higher value being stronger.

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 aluminium and stainless steels by their oxide layers.