Quality is evident in everything we do at MiTek. We use only the highest-grade steel for our connector plates. The MT20TM connector plates are manufactured from ASTM A-653, Grade 40, Structural Steel. The MT20HSTM and MT18HSTM plates are made from ASTM A-653, HSLAS Type B, Grade 60 steel. The steel is coated with a hot-dipped galvanize, resulting in a G60 coating designation. MiTek also offers G90 and G185 galvanized coatings and Stainless Steel Plates for added protection against corrosion.
Grade 40 Steel Characteristics:
Yield Point 40,000 psi
Tensile Strength 55,000 psi
Allowable Tensile Stress 24,000 psi
Allowable Shear Stress 16,000 psi
Our quality control teams monitor every phase of the plate manufacturing process including steel thickness, galvanized coating, yield and tensile strength, hardness, and nail characteristics.