Cap Nuts Fine Thread 1/4-28 from Mexico
Acorn-style cap nuts with 1/4-28 UNF fine threads and closed end for protecting bolt ends in exposed assemblies. Steel construction with various finishes; HTS 7318.16.0085 as 'other' nuts. Prevents dirt ingress and improves appearance.
Duty Rate — Mexico → 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
• Fine thread requires precise pitch verification
• Specify cap closure type (closed vs dome)
• Plating adhesion testing prevents corrosion claims