Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C1R4 found under Socket Plug In Elec by Viking Technologies Ltd. The National Stock Number assigned to this part is 5935005015708, and the Federal Supply Class is 5935 Connectors Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C1R4.