Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PO-43SS found under Ringretaining by Rotor Clip Company Inc. The National Stock Number assigned to this part is 5325016746575, 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 PO-43SS.