Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 58900 found under Nut Self Locking Plate by Trw Assemblies And Fasteners Group. The National Stock Number assigned to this part is 5310002628315, 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 58900.