Marine Grade Brass Machine Bolts 10-24 from Japan
10-24 machine bolts in marine-grade C46400 naval brass offer superior strength against seawater corrosion for boat hardware. HTS 7415.33.80 covers these copper alloy 'bolts', with zinc predominant per note (a). Partially threaded design suits through-bolting applications.
Duty Rate — Japan → United States
53%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Reference ASTM B21 standard for naval brass in technical docs
• Declare silicon content if present (<0.1% typical) to confirm brass status
• Galvanic corrosion testing recommended for mixed-metal import validations