Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 70857-12 found under Resistor Fixed Film by L 3 Communications Electronic. The National Stock Number assigned to this part is 5905014242290, 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 70857-12.