Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TP1-BK found under Coverelectrical Switch by Pass And Seymour Inc. The National Stock Number assigned to this part is 5930016736546, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TP1-BK.