Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3165-SP7 found under Pen Set Lettering Freehand by Koh I Noor Rapidograph Inc. The National Stock Number assigned to this part is 6675012435213, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3165-SP7.