Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FG39H found under Seat Valve by Blue Tee Corp. The National Stock Number assigned to this part is 4820008472695, 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 FG39H.