THREADED ROD PLAIN STEEL (BLACK) GRADE 8.8

Threaded rod is an extension to a bolt and has many applications, effectively working as a fully threaded pin to fasten or connect two materials together. Also used to stabilise structures, they can be inserted into various materials like concrete, wood or metal to either temporarily create a steady base during construction or they can be installed permanent

No Colour / Unmarked: Typically Class 4.6 or 4.8 (Mild Steel). These are for general-purpose, non-structural use.
Yellow: Class 8.8 (High Tensile). This is the "standard" high-strength rod used in construction and machinery.
White: Class 10.9 (Very High Tensile). Used for heavy-duty industrial or automotive applications.