Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KU3FM20H28 found under Case Power Supply by Zero Mfg Inc. The National Stock Number assigned to this part is 6130013041710, and the Federal Supply Class is 6130 Converters Electrical Non Rotating. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like KU3FM20H28.