Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 110BH3100 found under Valve By Pass by Hydro Engineering Inc. The National Stock Number assigned to this part is 4820012733187, 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 110BH3100.