M6 Stainless Steel Split Lock Washer
A helical split ring washer made from AISI 304 stainless steel, designed to compress under bolt tension for locking action and prevent fastener loosening. Its non-threaded spring design classifies it under this tariff item.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | +50.0% | 50% |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the washer is not a spring type
Non-spring stainless washers are classified separately.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify the stainless steel grade (AISI 304) on the commercial invoice
• Provide corrosion resistance test data if requested
• Check if the washers are for marine use, which may require additional certifications
Related Products under Tariff item 7318.21.00
1/4 Inch Zinc Plated Spring Lock Washer
A carbon steel split ring washer with zinc plating, designed to provide axial flex and prevent fastener loosening under vibration. Its non-threaded helical split design classifies it as a spring lock washer of iron or steel.
Anti-Vibration Curved Spring Washer
A multi-curved steel washer that absorbs vibration through controlled deflection, providing locking action in automotive and engine applications. Its non-threaded spring design places it under this tariff item as a spring lock washer.
Belleville Disc Spring Washer 20mm OD
A conical steel disc washer that flattens under load to maintain tension and absorb shock, used in high-pressure flange applications. Its elastic deformation qualifies it as a spring lock washer under this tariff item.
Cryogenic Stainless Lock Washer
An AISI 316 stainless steel spring washer tested for cryogenic service in LNG applications, providing locking in extreme low-temperature environments. Its non-threaded spring design classifies it under this tariff item.
DIN 127 Spring Lock Washer Type B
A heavy-duty rectangular steel washer per DIN 127 Type B standard, designed for high preload applications in European machinery. Its non-threaded spring lock design places it under this tariff item.
Finger Spring Washer Assortment Pack
A set of steel washers with radial fingers that deflect to lock fasteners, assorted sizes for maintenance and MRO applications. Packaged for retail but classified as non-threaded spring lock washers under this tariff item.