SPECIFICATIONS Caterpillar Hex Head Self-Locking Nuts (0314155) 031-4155 Hardened: Yes Nut Width - 3: 2-Jan Nut Height - 2: 0.27 Hole Thread Pitch: 18 Thread: Standard coarse thread Thread Size (inches - threads per inch) (inches): 5/16-18 Height (inches): 0.27 Connecting square (inch): 1/2 Material: STEEL Nut type: Self-locking hex nuts Material Description: SAE Grade 8 Equivalent Coating: Galvanized zinc (salt spray 96 h) Weight(lbs): 0.1 Length(cm): 1.4 Width(cm): 1.4 Depth(cm): 0.7