Lock Nut Color Black Dimensional Standards ASME B18.16.6 Finish Phosphate and Oil Hex Height 7/32 in Hex Type Flange Hex Top Lock Hex Width 9/16 in Insert Material Steel Lock Type Top Lock Distorted Thread Made in North America No Manufacturer Location Globally Sourced Material Steel Material Grade/Class Grade C Material Quality Standards IFI 100/107 SAE J995 Maximum Temperature 500 Degrees F Minimum Temperature -20 Degrees F Pack Size Small Pack REACH Compliant Yes