Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RMLH6520-108 found under Nut Self Locking Do by Harvard Industries Inc. The National Stock Number assigned to this part is 5310009152082, 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 RMLH6520-108.