Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 428580 found under Ring Lock Keyed by Calzoni Srl. The National Stock Number assigned to this part is 5365013869641, and the Federal Supply Class is 5365 Bushings Rings Shims And Spacers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 428580.