Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DF0309513 63 found under Boot Dust And Moisture Seal by Thales Optronics Limited. The National Stock Number assigned to this part is 5930008621084, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like DF0309513 63.