Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FDK-3171M2 found under Ring Retaining by Davis Aircraft Products Co Inc. The National Stock Number assigned to this part is 5325013300897, 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 FDK-3171M2.