Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4999-2113-104 found under Test Set Subassembly Electrical by Trak Microwave Corporation. The National Stock Number assigned to this part is 6625003572582, 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 4999-2113-104.