Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R1715AC found under Valve Angle by Brass Craft Mfg Co. The National Stock Number assigned to this part is 4820004769739, 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 R1715AC.