Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6700-D-31678-2 found under Adaptor Plate Rack Mount by Wiltron Co. The National Stock Number assigned to this part is 5342013029046, 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 6700-D-31678-2.