Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3M-190 found under Ring Lock Serrated by Sulzer Metco Uk Ltd. The National Stock Number assigned to this part is 5365014225376, and the Federal Supply Class is 5365 Bushings Rings Shims And Spacers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3M-190.