Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1 4 NPT BLK PLUG found under Plug Pipe by All Craft Screw And Hardware Co Inc. The National Stock Number assigned to this part is 4730013529053, and the Federal Supply Class is 4730 Hose Pipe Tube Lubrication And Railing Fittings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1 4 NPT BLK PLUG.