Lock Nut Dimensional Standards MIL-S-8879 NASM25027 USAS B46.1 Finish Plain Hex Height 1/16 in Hex Type Thin Light Hex Hex Width 3/8 in Lock Type Flexible Top Material Stainless Steel Material Grade/Class 18-8 Maximum Temperature 1 200 Degrees F Minimum Temperature -70 Degrees F Pack Size Small Pack Removable Yes Resistance Properties Corrosion Resistant Impact Resistant Shock and Vibration Resistant System of Measurement Inch Thread Direction Right Hand Thread Fit 3B