Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number QB80023-5 found under Gage Main Switch by Honeywell International Inc. The National Stock Number assigned to this part is 5220000953839, and the Federal Supply Class is 5220 Inspection Gages And Precision Layout Tools. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like QB80023-5.