Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 7566251-004 found under Resistor Network Fi by Abbatron Llc. The National Stock Number assigned to this part is 5905012489596, 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 7566251-004.