Castle Nut 7/16-20 from United States
A castle nut with 7/16-20 threading, made of steel, featuring drilled holes for safety wiring in critical applications. As a threaded nut of iron or steel, it falls under tariff item 7318.16.00.
Duty Rate — United States → Canada
50%
Rate breakdown
26SUR5050%United States Surtax Order (2026) — 50% on US products
Import Tips
• Confirm the castle nut is not part of a larger assembly that could be classified elsewhere
• Ensure the safety wiring holes are clearly documented in the product description
• Check if the nut is for aerospace use, which may require additional certifications