SKF Lock nut AH3124+23124(good quality) 1Size:238,248,239,230,240,231,241series 2.Reference ... $1.5-500 3OEM service SKF Lock nut AH3124+23124(good quality)1.Types:238series,248series,239series,,230series,240series,231,241,222 ... medium and large motors, generators, internal combustion engines, gas turbines, machine tool spindles, deceleration devices, and material handling machinery and various ...