Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B590307 found under Stud Snap Fastener by Trw Assemblies And Fasteners Group. The National Stock Number assigned to this part is 5325007635758, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B590307.