Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4200-654 found under Resistor Variable Nonwire Wound by Bei Sensors And Systems Company Inc. The National Stock Number assigned to this part is 5905012671320, 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 4200-654.