Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K19 2RFA001258 found under Resistor Variable Hybrid by M A Com Inc. The National Stock Number assigned to this part is 5905014695907, 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 K19 2RFA001258.