Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BA99448K503 found under Resistor Variable Nonwire Wound by Stampr Inc. The National Stock Number assigned to this part is 5905002678993, 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 BA99448K503.