Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BL101 ITEM 24 found under Lens Optical Instrument by Baker Lyman And Company Inc. The National Stock Number assigned to this part is 6650012971651, 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 BL101 ITEM 24.