Products > Wheels and Brakes > Axle Nuts
Castle type nuts manufactured to MIL Specification MS21025 using 4140 steel. Mild steel nuts are not acceptable for use on certified aircraft. Use 1-1/4” nuts for 500x5 axles and 1-1/2” for 600x6.
StyleThread SizePart Number
Castle1-1/4x1606-11800
1-1/2x1606-11900
Round1-1/4x1211725
1-1/2x1611726