Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D9850-13-12 found under Stem Deburring Tool Tube by Designed Metal Connections Inc. The National Stock Number assigned to this part is 5110000030537, and the Federal Supply Class is 5110 Hand Tools Edged Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D9850-13-12.