1-3/4-5 Grade 2H Plain Finish Steel Round Slotted Castle Nut, 5 pk.
2.2, Material Quality Standards ASTM A194, System of Measurement Inch, Thread Direction Right Hand, For Pin Diameter 3/8 in, Maximum Slot Width 0.Castle Nut, Finish Black Oxide, Material Steel, Material Grade/Class Grade 2H, Thread Size 1 3/4 In.-5, Hex Width 2 3/4 in, Hex Height 1 23/32 in, Hex Type Standard Hex, Lock Type Slotted Castle, Dimensional Standards ASME B1.