To install my new Marathon motor and Multi-Stage Motor, I purchased some 5/16-18 stainless steel hex cap screws, flat washers and lock nuts. Why would the manufacture (Hillman) package the hex cap screws in a pack of 3, the flat washers in a pack of 5 and the lock nuts in a pack of 5? Does that make any sense? I need 8 of each so I need 2 packs of lock nuts, 3 packs of screws and 2 packs of washers?