Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A20403 found under Needle Embroidery by Dick Blick Company. The National Stock Number assigned to this part is 8315004016872, and the Federal Supply Class is 8315 Notions And Apparel Findings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A20403.