Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B116-1IN found under Valve Gate by Research Products Corp. The National Stock Number assigned to this part is 4820010341694, 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 B116-1IN.