Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1IN.SPEEDMODEL found under Stencil Cutting Machine Hand Ope by Illinois Tool Works Inc. The National Stock Number assigned to this part is 7490001640537, 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 1IN.SPEEDMODEL.