Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3N20 found under Ring Retaining by Meritor Heavy Vehicle Systems Llc. The National Stock Number assigned to this part is 5325003522172, 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 3N20.