KMTA 8 Precision lock nuts with locking pin detail Specifications: Material : 52100 Chrome Steel Weight : 0.22 Kg   Main Dimensions: Thread (G) : M40X1.5 Outside diameter (d2) : 58 mm Outside diameter locating side face (d3) : 52 mm Inner diameter locating side face (d4) : 42 mm Width (B) : 22 mm Pitch diameter for pin-type face spanner (J1) : 50.5 mm Distance between holes for pin-wrench and locating side face (J2) : 12 mm Diameter holes for pin-type face spanner (N1) : 4.3 mm Diameter holes for pin-wrench (N2) : 5 mm Set / Locking screw size (d) : M6