Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B50-101-202 found under Resistor Variable Nonwire Wound by E T I Systems Inc. The National Stock Number assigned to this part is 5905010279352, 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 B50-101-202.