HS 8540 — Thermionic, cold cathode or photocathode tubes (for example, vacuum or vapor or gas filled tubes, mercury arc rectifying tubes, cathode-ray tubes, television camera tubes)
HS heading 8540 (Thermionic, cold cathode or photocathode tubes (for example, vacuum or vapor or gas filled tubes, mercury arc rectifying tubes, cathode-ray tubes, television camera tubes)) spans 10 products in U.S. import records, with 191,079 bill-of-lading shipments. The most imported are Cathode-ray television picture tubes, including video monitor cathode-ray tubes, color, Television camera tubes, and Thermionic, cold cathode or photocathode tubes (for example, vacuum or vapor or gas filled tubes, mercury arc rectifying tubes, cathode-ray tubes, television camera tubes) of cathode-ray tubes.
Part of Chapter 85: Electrical machinery and equipment; sound and television apparatus
Sourced from U.S. Customs bill of lading data · Updated monthly · Data through August 2026Cite as: ImportDoor, U.S. Customs bill of lading data (data through August 2026), https://www.importdoor.com/products/heading/8540
Products under this heading
Frequently asked questions about HS 8540
What is HS code 8540?
HS 8540 covers thermionic. It is a 4-digit heading in chapter 85 (Electrical machinery and equipment; sound and television apparatus) of the Harmonized System, with 10 six-digit subheadings that appear in U.S. import records.
How many U.S. import shipments fall under HS 8540?
ImportDoor has 191,079 U.S. Customs bill-of-lading shipment records under HS heading 8540, updated monthly.
What is the most imported product under HS 8540?
Cathode-ray television picture tubes (HS 854011) leads with 76,971 shipments, followed by Television camera tubes (HS 854020) and Thermionic (HS 854091).