Find HS Code and trade information for black self tapping screws

Self-Tapping Screws

Self-tapping screws are screws that create their own threads as they are driven into a material. This eliminates the need for pre-tapped holes, simplifying assembly and reducing production time. They are commonly used in a variety of applications, from DIY projects to large-scale industrial manufacturing.

Material

Self-tapping screws are manufactured from a range of materials, chosen based on the application's requirements for strength, corrosion resistance, and cost. Common materials include:

• Steel: Carbon steel is a common and economical choice, often with coatings for corrosion protection.
• Stainless Steel: Offers excellent corrosion resistance, suitable for outdoor or wet environments. Grades 304 and 316 are frequently used.
• Brass: Provides good corrosion resistance and conductivity, often used in electrical applications.
• Aluminum: Lightweight and corrosion-resistant, suitable for applications where weight is a concern.

Black Oxide Coating: The "black" in "black self-tapping screws" refers to a black oxide coating applied to the steel screw. This coating provides mild corrosion resistance, enhances lubricity, and offers a decorative finish. It is a cost-effective option but doesn't offer the same level of protection as stainless steel or other specialized coatings.

Purpose

The primary purpose of self-tapping screws is to fasten materials together without requiring pre-drilled holes or the use of nuts. They are particularly useful in:

• Sheet metal applications
• Plastics
• Wood (though often less effective than dedicated wood screws)
• Fastening thin materials

Function

Self-tapping screws function by:

• Thread Formation: The screw's threads are designed to cut or form threads into the material as it is driven in.
• Self-Drilling (Optional): Some self-tapping screws feature a drill-like point that drills a pilot hole, taps the threads, and fastens in a single operation.
• Tightening: As the screw is turned, it draws the materials together, creating a secure connection.

Usage Scenarios

• Electronics Enclosures: Fastening sheet metal cases and components.
• Automotive: Securing interior trim panels and components.
• HVAC: Assembling ductwork and equipment housings.
• DIY Projects: General fastening in home repairs and construction.
• Roofing: Attaching roofing sheets to support structures.

Common Types

Self-tapping screws are categorized based on their thread type and point style:

• Type A: Designed for thin sheet metal. They have blunt points and require a pre-drilled hole.
• Type B: Also for thin sheet metal, but with sharper points for self-starting in thinner materials.
• Type C: Designed for harder materials and thicker sheet metal. They have even sharper points and often require a pilot hole.
• Self-Drilling Screws (also known as Tek Screws): Feature a drill-like point that eliminates the need for pre-drilling. They are commonly used for metal roofing and siding.
• Drywall Screws: A specialized type of self-tapping screw designed for attaching drywall to wood or metal studs.
• Pan Head: Provides a wide bearing surface and a low-profile appearance.
• Flat Head: Designed to sit flush with the surface of the material.
• Oval Head: Offers a decorative appearance and a partially recessed finish.
• Round Head: Provides a general-purpose fastening solution.

Based on the provided information, “black self tapping screws” fall under the category of screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel. The specific HS codes applicable depend on the shank or thread diameter.

Here are the relevant HS codes:

• 7318141060: Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel: Threaded articles: Self-tapping screws: Having shanks or threads with a diameter of less than 6 mm. This code applies to self-tapping screws with a diameter smaller than 6mm.

  • 73: Articles of iron or steel.
  • 18: Fasteners, screws, bolts, nuts, etc.
  • 14: Threaded articles.
  • 10: Self-tapping screws.
  • 60: Having shanks or threads with a diameter of less than 6 mm.

• 7318190000: 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. This code applies to self-tapping screws not specifically covered by 7318141060, or those with a diameter of 6mm or greater.

  • 73: Articles of iron or steel.
  • 18: Fasteners, screws, bolts, nuts, etc.
  • 19: Threaded articles (other).
  • 00: Other.

Tax Information:

Both HS codes are subject to a base tariff of 6.2% or 5.7% respectively, an additional tariff of 25.0%, and a tariff of 30.0% after April 2, 2025. A further 25% additional tariff applies to steel and aluminum products. This results in a total tariff of 86.2% or 85.7% respectively.

Important Note:

The applicable tariff for both HS codes includes an additional 25% tariff on steel and aluminum products. Please verify the material composition of the screws to confirm if this additional tariff applies.