Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAJ5-02BC found under Nut Self Locking Pl by Harvard Industries Inc. The National Stock Number assigned to this part is 5310010791943, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NAJ5-02BC.