Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 189-2911 found under Insert Assembly by Soltam Systems Ltd. The National Stock Number assigned to this part is 4820016271628, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 189-2911.