Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 58637G512 found under Resistor Network Fi by Safe Flight Instrument Corporation. The National Stock Number assigned to this part is 5905011555499, 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 58637G512.