Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HSP1396 found under Gage Plug Taper Cyl by Mk Test Systems. The National Stock Number assigned to this part is 5220001762914, 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 HSP1396.