Jam Nut, Hex Type Jam Hex, Finish Zinc Yellow, Material Steel, Material Grade/Class Grade 5, Thread Size 7/8 In.-9, Hex Width 1 19/64 in, Hex Height 33/64 in, Dimensional Standards ASME B18.2.2, System of Measurement Inch, Thread Direction Right Hand, Pack Size Small Pack, Thread Type Coarse