Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TRK-B6-4X4-LH-D found under by Armored Group Llc The. The National Stock Number assigned to this part is 2320016006511, 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 TRK-B6-4X4-LH-D.