Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3K-103-J found under Resistor Thermal by Therm O Disc Inc. The National Stock Number assigned to this part is 5905014090607, and the Federal Supply Class is 5905 Resistors. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3K-103-J.