Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 10028 found under Coupler Exciter by Libby Power Systems Llc. The National Stock Number assigned to this part is 6115005705396, and the Federal Supply Class is 6115 Generators And Generator Sets Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 10028.