M4 Helical Spring Lock Washer from United States
A small M4 helical spring lock washer made of carbon steel, designed for M4 metric bolts to prevent loosening from vibration. It features a split ring that compresses under the bolt head or nut, creating tension. This non-threaded spring washer is classified under tariff item 7318.21.00.
Duty Rate — United States → Canada
Rate breakdown
PGA flags (1)Show detailsHide detailsHCConsumer Products SafetyMay be required
- HC
Consumer Products Safety · May be required
May require HC Consumer Products Safety depending on intended use (HC21) and Canadian product category (HC29, HC30, HC31, HC32, HC33, HC34, HC35, HC36, HC37); or intended use (HC22, HC23, HC24, HC26, HC27) and Canadian product category (HC37). Matching criteria: Equal To 7318210000; Equal To 7318210000. Logic: MATCH IF (Valid HS Code) AND (Intended Use Code) AND (Valid Canadian Product Category).
CBSA Single Window matching criteria, unknown
Import Tips
• Accurately declare the metric size (M4) on the customs documentation to avoid classification errors
• Verify the carbon steel composition and consider whether preferential duty rates apply
• Keep the washers packaged and labeled clearly for efficient CBSA processing