Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1440-4 found under Gage Plug Thread by Emhart Industries Inc. The National Stock Number assigned to this part is 5220005664059, 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 1440-4.