Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S1565-64308 found under Ring Retaining by Sikorsky Aircraft Corporation. The National Stock Number assigned to this part is 5325009245873, 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 S1565-64308.