Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A-A-59158 found under Gage Plug Thread by Federal Commercial Item Description. The National Stock Number assigned to this part is 5220005664047, 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 A-A-59158.