Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3300473 found under Ring Retaining by Aar Powerboss Inc. The National Stock Number assigned to this part is 5325014978509, 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 3300473.