Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TRI-B6D found under Modulator Subassembly by Cerberus Pyrotronics Inc. The National Stock Number assigned to this part is 1290014613928, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TRI-B6D.