HS Code for Deck screws

Deck screws are classified under HS code 7318.12, which specifically covers threaded wood screws made of iron or steel, excluding coach screws. The classification is determined by the fastener's design features, such as a sharp point for piercing wood, a coarse thread for gripping timber fibers, and often a countersunk head. Unlike standard wood screws, deck screws are typically manufactured with specialized coatings, such as ceramic, epoxy, or high-grade stainless steel, to resist corrosion in outdoor environments. Under the General Rules for the Interpretation (GRI) of the Harmonized System, products are classified based on their constituent material and their specific function. Since these are threaded articles of iron or steel designed for wood, they fall squarely into the 7318 heading. The distinction between 7318.12 and other subheadings like 7318.15 lies in the thread profile and the intended substrate. Deck screws are not intended for use with nuts, nor are they designed for metal-to-metal fastening, which reinforces their placement under the wood screw category. Furthermore, they are distinguished from coach screws by their head type; coach screws typically have hexagonal heads for wrenching, whereas deck screws use recessed drives like Torx or Phillips.

Products Included

• Stainless steel deck screws
• Ceramic-coated wood screws
• Bugle head wood screws
• Square drive timber screws
• Composite decking fasteners

Common Misclassification

Deck screws are frequently misclassified under HS code 7318.14, which is reserved for self-tapping screws. While some deck screws have self-drilling tips, they are primarily designed for wood substrates, whereas 7318.14 is intended for metal or plastic. Another common error is using 7318.15, which covers other screws and bolts. However, because deck screws have a tapered thread specifically for wood, 7318.12 is the more specific and correct heading. Additionally, coach screws (lag screws) must be placed under 7318.11, not 7318.12.

FAQ

What is the HS code for deck screws?

The standard HS code for deck screws is 7318.12, which covers threaded wood screws made of iron or steel.

Are stainless steel deck screws classified differently?

No, stainless steel deck screws remain under 7318.12 because the heading covers all iron or steel wood screws, and stainless steel is an alloy of steel included in this category.