Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WHT-393-S16 found under Ring Retaining by Cunico Corporation. The National Stock Number assigned to this part is 5325016426633, 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 WHT-393-S16.