Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 0T-304139 found under Gage Comparator Air by Eaton Aerospace Ltd. The National Stock Number assigned to this part is 5220012957392, 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 0T-304139.