Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number H12 1-2R1-8 40 found under Resistor Variable W by E Systems Inc. The National Stock Number assigned to this part is 5905002422102, 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 H12 1-2R1-8 40.