Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number H6364 6-BW1 3INCH found under Valve Butterfly by Bay State Controls Corporation. The National Stock Number assigned to this part is 4820012362656, 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 H6364 6-BW1 3INCH.