If you are going to import n series lock nut in stock or you want to check the price with one China n series lock nut manufacturer, supplier and factory, please feel free to contact Weinuo Machinery.N and AN lock nuts have inch dimensions. Lock nuts with thread diameters ≤ 8 5/8 in. (size ≤ 44) use a lock washer.Lock nuts with thread diameters ≥ 9 7/16 in. (size ≥ 48) use a locking plate.