HS Code for Flat washers

Flat washers made of iron or steel are classified under HS code 7318.22. This code is situated within Chapter 73, which covers articles of iron or steel, and heading 7318, which includes screws, bolts, nuts, and similar fasteners. Subheading 7318.22 specifically identifies non-threaded washers that do not have a spring or locking mechanism. The primary function of these components is to distribute the load of a threaded fastener, such as a bolt or nut, over a larger surface area or to act as a spacer. The classification is strictly based on the material (iron or steel) and the physical form (flat, non-threaded, non-spring). If the washer were made of a different material, such as copper or plastic, it would be classified in a different chapter entirely, regardless of its flat shape.

Products Included

• Standard flat washers (Type A and Type B)
• Fender washers with oversized outer diameters
• Penny washers for thin material protection
• Structural flat washers for heavy-duty construction
• Small-pattern washers for tight clearances
• Hardened steel flat washers for high-strength bolts

Common Misclassification

Flat washers are often confused with spring washers or lock washers, which are classified under 7318.21. Spring washers are designed to prevent loosening due to vibration, whereas flat washers (7318.22) are for load distribution. Another common error is classifying washers made of other metals here; for instance, copper washers belong in 7415.21 and aluminum washers in 7616.10. If the washer is threaded, it would be classified as a nut under 7318.16 rather than a non-threaded washer.

FAQ

What is the HS code for Flat washers?

The HS code for iron or steel flat washers (non-threaded and non-spring) is 7318.22.

Are stainless steel flat washers included in this code?

Yes, as long as they are made of steel and are non-threaded and non-spring, stainless steel flat washers fall under 7318.22.