Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BMS4-6 T3.1-19 F40 .0019N5052 found under Core Material Cellular Structura by Texas Almet Lp. The National Stock Number assigned to this part is 5680015455174, and the Federal Supply Class is 5680 Miscellaneous Construction Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BMS4-6 T3.1-19 F40 .0019N5052.