M3.5x25mm A4-80 Socket Button Head Screw from Canada
A4-80 (316) stainless socket button head screw, M3.5 diameter under 6 mm, with low-profile domed head for aesthetic fastening. Classified HTS 7318.15.60.10 for stainless socket screws with small threads. Used in architectural hardware and appliances.
Duty Rate — Canada → United States
56.2%
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
• Button head distinguishes from cap head; specify head style in entry docs
• Passivation certification required for A4 marine-grade corrosion resistance
• Avoid mixing with non-socket screws in same shipment to prevent commingling