Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 620-210-44 found under Amplifier Subassemb by Ametek Programmable Power Inc. The National Stock Number assigned to this part is 5996011146031, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 620-210-44.