Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 926 1520 PARTS KIT found under Parts Kit Audiometer Portable by Beltone Electronics Corp. The National Stock Number assigned to this part is 6545012718074, 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 926 1520 PARTS KIT.