Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 81919 found under Plate Surface by Starrett L S The Co Starrett Granite. The National Stock Number assigned to this part is 5220012153763, and the Federal Supply Class is 5220 Inspection Gages And Precision Layout Tools. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 81919.