Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CAL11415PC4 found under Cock Plug by Barkley Mfg Co. The National Stock Number assigned to this part is 4820002875615, 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 CAL11415PC4.