Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BTP 451167 B1 found under Mechanical Stop by Bren Tronics Inc. The National Stock Number assigned to this part is 5340016658685, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BTP 451167 B1.