Hex Nut Hex Type Heavy Hex Finish Hot Dipped Galvanized Material Grade/Class Grade DH Material Steel Thread Size 1 In.-8 Hex Width 1 5/8 in Hex Height 63/64 in Manufacturer Location Globally Sourced Dimensional Standards ASME B18.2.2 Material Quality Standards ASTM A194 ASTM A563 System of Measurement Inch Thread Direction Right Hand Color Silver/Blue Made in North America No Maximum Temperature 390 Degrees F Minimum Temperature -20 Degrees F