Spring Mechanism for Automatic Door Closer from Canada
High-tension steel coil spring that provides the primary closing force in automatic door closer units. Falls under HTS 8302.60.90.00 as a critical base metal part of door closing hardware for commercial buildings. Adjustable torque rating.
Duty Rate — Canada → United States
28.1%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16, 9903.82.20–9903.82.26 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) and (xi) 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
• Load test certificates demonstrate spring tension specifications for door applications
• Package with closer assembly instructions to establish part-of-a-whole relationship
• Avoid classification as mattress springs (9409.90); emphasize building hardware use