Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 20131520 found under by Karl Storz Endoscopy America Inc. The National Stock Number assigned to this part is 6035015511356, and the Federal Supply Class is 6035 Fiber Optic Light Transfer And Image Transfer Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 20131520.