Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F39010100 found under Ring Retaining by Funk Mfg Co. The National Stock Number assigned to this part is 5325012972690, 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 F39010100.