Muntz Metal Marine Propeller Bolt
A heavy-duty bolt made from Muntz metal (copper-zinc alloy with approximately 60% copper and 40% zinc), specifically designed for securing marine propellers to boat shafts. It falls under HTS 7415.33.10.00 as a Muntz metal bolt, valued for its corrosion resistance in saltwater environments typical of marine applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when imported as integral part of a marine propeller assembly
Pre-assembled bolts in propeller units are classified as transmission shaft parts under heading 8483, not separate fasteners.
If made from copper-zinc base alloy (brass) rather than Muntz metal
Brass bolts (zinc predominant but lower copper content) fall under 7415.21, while Muntz requires specific high-zinc composition.
If steel construction with copper plating only on heads
Steel bolts with copper heads are classified under Chapter 73 iron/steel articles, not pure copper products.
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Import Tips & Compliance
• Verify alloy composition meets Muntz metal definition (zinc >40%, copper predominant, no more than 1% lead) with mill certificates to avoid reclassification
• Include documentation proving maritime end-use if applicable for potential duty reductions under certain trade agreements
Related Products under HTS 7415.33.10.00
Muntz Metal Seawall Tie Rod Bolt
Corrosion-resistant bolt made from Muntz metal used in seawall construction to tie concrete panels to deadmen anchors. Falls under HTS 7415.33.10.00 specifically for Muntz/yellow metal bolts in marine civil engineering.
Yellow Metal Anchor Shackle Bolt
A threaded bolt crafted from yellow metal (high-zinc copper alloy similar to Muntz), used in anchor shackles for securing chains on boats. Classified under HTS 7415.33.10.00 due to its specific Muntz/yellow metal composition providing excellent seawater corrosion resistance.
Muntz Metal Ship Deck Fitting Bolt
Corrosion-resistant bolt made of Muntz metal for fastening deck fittings like cleats and rails on ships. HTS 7415.33.10.00 applies as it precisely matches the Muntz/yellow metal bolt subheading in Chapter 74 copper articles.
Yellow Metal Pier Structure Bolt
Heavy hex bolt of yellow metal used in pier and dock construction to secure structural members exposed to seawater. Falls under HTS 7415.33.10.00 for its Muntz metal composition optimized for marine structural applications.
Muntz Metal Boat Hull Through-Bolt
Long through-bolt constructed from Muntz metal for attaching hull fittings like transducers and thru-hulls on fiberglass boats. Classified in HTS 7415.33.10.00 as a Muntz/yellow metal bolt due to its specific alloy for below-waterline corrosion resistance.
Yellow Metal Rudder Post Bolt
Specialized bolt of yellow metal securing rudder posts on sailboats and motor yachts. HTS 7415.33.10.00 designation reflects its Muntz alloy composition essential for prolonged submersion in seawater.