Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 624020003 found under Window Observation by Aar Manufacturing Inc. The National Stock Number assigned to this part is 9330015721945, and the Federal Supply Class is 9330 Plastics Fabricated Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 624020003.