Find HS Code and trade information for small screw

Small Screw

A small screw is a type of fastener, typically made of metal, characterized by a helical ridge around a cylindrical or conical shaft and a head on one end. It is used to join materials together by digging into a material and holding it in place through friction.

Material:

• Steel: The most common material, offering high strength and durability. Often coated with zinc, chrome, or other finishes for corrosion resistance.
• Stainless Steel: Provides excellent corrosion resistance, ideal for outdoor or wet environments.
• Brass: Softer than steel, used for decorative purposes or applications where corrosion is a concern and high strength isn’t required.
• Aluminum: Lightweight and corrosion-resistant, suitable for applications where weight is a factor.
• Plastic: Used in applications where electrical insulation or corrosion resistance is paramount, and strength requirements are low.

Purpose:

The primary purpose of a small screw is to securely fasten materials together. They provide a stronger and more reliable hold than nails, particularly in applications subject to vibration or stress. They are also easily removable and reusable.

Function:

A small screw functions by converting rotational motion into linear force. When a torque is applied to the screw head, the threads engage with the material, pulling the materials together as the screw is driven in. The threads create a wedging force, increasing friction and resistance to removal.

Usage Scenarios:

• Woodworking: Joining wood components in furniture, cabinets, and other wooden structures.
• Electronics: Securing components to circuit boards, enclosures, and other electronic devices.
• Machinery: Fastening parts in engines, appliances, and other mechanical systems.
• Construction: Joining lightweight materials, attaching fixtures, and general assembly.
• DIY Projects: A wide range of applications in home repairs, crafts, and hobby projects.

Common Types:

• Flat Head Screws: Countersunk head designed to sit flush with the surface of the material.
• Round Head Screws: Dome-shaped head that protrudes above the surface.
• Oval Head Screws: Combination of flat and round head, providing a decorative appearance.
• Pan Head Screws: Slightly rounded head with a large bearing surface.
• Button Head Screws: Small, low-profile head, often used in machine applications.
• Machine Screws: Designed to be used with nuts or tapped holes, typically with finer threads.
• Self-Tapping Screws: Create their own threads as they are driven into the material, eliminating the need for pre-drilled holes.
• Self-Drilling Screws: Combine drilling and fastening in a single operation, ideal for thin materials.
• Set Screws: Used to secure an object within or against another object, often with a pointed tip.

The size of a small screw is typically defined by its diameter and length, often expressed in fractions of an inch or millimeters. The head type and drive style (e.g., Phillips, slotted, Torx) also vary depending on the application.

Based on the provided information, “small screw” can be classified under several HS codes, depending on its specific characteristics. Here's a breakdown:

• 7318152010: This code covers screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel; threaded articles; other screws and bolts, whether or not with their nuts or washers; bolts and bolts and their nuts or washers entered or exported in the same shipment having shanks or threads with a diameter of less than 6 mm. This is applicable if the screw is made of iron or steel and has a diameter less than 6 mm. The total tax rate is 80.0%, comprising a base tariff of 0.0%, an additional tariff of 25.0%, and a further 30.0% additional tariff applicable after April 2, 2025, plus a 25% additional tariff for steel or aluminum products.
• 7318156070: This code also covers screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel; threaded articles; other screws and bolts, whether or not with their nuts or washers; other; socket screws of stainless steel having shanks or threads with a diameter of less than 6 mm. This applies if the screw is a stainless steel socket screw with a diameter less than 6 mm. The total tax rate is 86.2%, consisting of a base tariff of 6.2%, an additional tariff of 25.0%, and a further 30.0% additional tariff applicable after April 2, 2025, plus a 25% additional tariff for steel or aluminum products.

Important Considerations:

• Diameter Verification: The diameter of the screw shank or thread is crucial for correct classification under these codes. Ensure accurate measurement.
• Material Verification: The material composition (iron, steel, stainless steel) is also critical.
• Additional Tariffs: Be aware of the additional tariffs applicable to steel or aluminum products (25%) and the tariff changes effective after April 2, 2025 (increase to 30%).