Square Nuts 3/8-16 UNC from Canada
Forged square nuts with 3/8-16 UNC coarse threads for welding and timber framing applications. HTS 7318.16.0085 includes these non-hexagonal threaded nuts of steel. Square shape prevents spinning during assembly.
Duty Rate — Canada → United States
50%
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
• Confirm forging marks and thread pitch certification
• Bulk packaging common; ensure net weight accuracy for duty calculation
• Distinguish from hex coupler nuts by dimensions