KMT 1 Precision lock nuts with locking pin detail Specifications: Material : 52100 Chrome Steel Weight : 0.053 Kg   Main Dimensions: Thread (G) : M12X1 Diameter side face opposite to bearing (d1) : 23 mm Outside diameter (d2) : 30 mm Outside diameter locating side face (d3±0.30) : 25 mm Inner diameter locating side face (d4±0.30) : 13 mm Width (B) : 14 mm Width locating slot (b) : 4 mm Depth locating slot (h) : 2 mm Width flat spanner (M 0/-0.50) : 27 mm Set / Locking screw size (A) : M5 L : 2 mm C : 26.5 mm R1 : 0.5 mm Sd : 0.04 mm