THREADED ROD ZINC

METRIC AND IMPERIAL THREADED ROD IN ZINC COATING

Class 4.6 Zinc refers to a specific metric property class for low-strength Mild Steel Threaded Rods coated with a thin layer of zinc for basic protection. 

Strength Breakdown (The "4.6" Meaning)The numerical designation follows the ISO 898-1 Standard, where each digit represents a mechanical property: 
"4" (Tensile Strength): The first digit represents 1/100th of the nominal tensile strength. Thus, Class 4.6 has a tensile strength of 400 MPa (megapascals).
".6" (Yield Strength): The second digit indicates that the Yield Strength is 60% of the tensile strength. This equates to 240 MPa.