Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3-107-5AY107THRU207 found under Valve by Loeffler Corporation. The National Stock Number assigned to this part is 4820008439406, 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 3-107-5AY107THRU207.