Lock Nut Finish Zinc Plated Material Steel Material Grade/Class Grade 2 Thread Size 3/8 In.-16 Hex Width 9/16 in Hex Height 17/64 in Lock Type Nylon Insert System of Measurement Inch Hex Type Standard Hex Thread Direction Right Hand Insert Material Nylon Maximum Temperature 250 Degrees F Pack Size Small Pack Rockwell Hardness C28 Max Package Quantity 100