Cotton-Core Safety Fuse from Mexico
Traditional black powder safety fuse with a cotton core impregnated with gunpowder, wrapped in multiple textile layers for waterproofing and durability. Classified under HTS 3603.10.00.00 for its role as a low-explosive time-delay fuse in demolition and quarrying. Burn speed is approximately 35-45 seconds per meter.
Duty Rate — Mexico → United States
13%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide burn rate test certificates from accredited labs to avoid reclassification as fireworks
• ATF Form 6 required; ensure importer is registered explosives dealer
• Avoid mixing with detonating cord in shipments to prevent hazardous combination rules