Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 342-5200 PARTS KIT found under Parts Kit Inhalator by O Two Medical Technologies Inc. The National Stock Number assigned to this part is 6545012666520, 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 342-5200 PARTS KIT.