Lock Nut Finish Plain Material Stainless Steel Material Grade/Class 18-8 Thread Size M12-1.75 Hex Width 19 mm Hex Height 12 mm Lock Type Nylon Insert Dimensional Standards ASME 18.2.1 D985 Material Quality Standards ASTM A307A System of Measurement Metric Hex Type Standard Hex Thread Direction Right Hand Color Silver Insert Material Nylon Made in North America No Manufacturer Location Globally Sourced Maximum Temperature 302 Degrees F Minimum Temperature -58 Degrees F