Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FEN28-10-17BBM1 found under Case Test Set by Ta Instrument Case Co. The National Stock Number assigned to this part is 6625012717587, 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 FEN28-10-17BBM1.