Muntz Metal Boat Hull Through-Bolt
A long through-bolt constructed from Muntz metal (a copper-zinc alloy with approximately 60% copper and 40% zinc) for attaching hull fittings like transducers and thru-hulls on fiberglass boats. Its corrosion-resistant composition makes it suitable for prolonged marine exposure. Classified under tariff item 7415.33.00 as a threaded bolt of copper alloy.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the bolt is imported with a nut or washer as a set
Nails, tacks, staples and similar articles of copper are classified under this heading when presented as sets.
If the bolt is part of a valve or similar apparatus
Parts of valves and similar appliances for pipes, boilers, tanks, vats or the like are classified in Chapter 84.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the bolt's copper-zinc alloy composition is documented to confirm classification under 7415.33.00
• Provide a certificate of origin if claiming preferential tariff treatment under a free trade agreement
• Be aware that the CBSA may request laboratory analysis to verify the alloy's metal content
Related Products under Tariff item 7415.33.00
Antique Finish Copper Wood Screws
Decorative copper wood screws with an antique patina finish, designed for restoration hardware in historic wood buildings. The aesthetic coating does not alter their function as threaded copper fasteners for wood, and they are classified as screws of copper under this tariff item.
Brass Acorn Nuts 10-32
10-32 brass acorn nuts provide domed caps for clean finishes on exposed bolts in automotive restoration. These are copper-zinc alloy nuts, classified under this tariff item as copper nuts, with zinc predominating over other elements per subheading note 1(a).
Brass Cap Nuts 3/8-16 UNF
3/8-16 UNF brass cap nuts feature acorn-shaped closed ends to protect threads and enhance appearance in visible assemblies. These are classified as copper nuts under this tariff item, being made of a copper-zinc base alloy.
Brass Jam Nuts 1/4-28
Thin profile 1/4-28 brass jam nuts lock against primary nuts in vibration applications. These are copper-zinc alloy nuts, classified under this tariff item as copper nuts.
Brass Lag Bolts 5/16 x 3 Inch
5/16 x 3 inch brass lag bolts feature coarse wood threads and hex heads for heavy-duty anchoring in docks and outdoor structures. They qualify under this tariff item as bolts of copper alloy, valued for non-magnetic properties and corrosion resistance.
Brass Panel Nuts M5
M5 brass panel nuts mount instruments through thin panels with floating capture design. These are machined from free-cutting brass, a copper-zinc alloy, and are classified as copper nuts under this tariff item.