Fiber Optic Connectors and Other Components: Connectors, splices, and couplers specifically designed for optical fibers are classified under HS Code 8536. In your letter dated March 23, 2023, you requested a tariff classification ruling on behalf of Performed Line Products Company. There are five items under consideration with this request. Please use filters at the bottom of the page to view and select unit type. com is specialize in providing harmonized tariff numbers and commodity codes.