socket self tapping screw
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 7318141060 | 91.2% | CN | US | Official Doc |
| 7318145080 | 93.6% | CN | US | Official Doc |
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AI Analysis
🔩 Socket Head Cap Self-Tapping Screws & Similar Fasteners
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
📌 I. Product Definition and Classification: Do You Really Understand "Self-Tapping Screws"?
Self-tapping screws are fasteners that can form their own thread in the material they are driven into, without the need for a pre-tapped hole or a separate nut. In international trade, these items fall under Chapter 73 of the Harmonized System, specifically within 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 classification hinges on two critical factors: 1. Type: They must be Self-Tapping Screws. 2. Dimension: The diameter of the shank or thread determines the specific 8-digit HS code.
⚠️ Key Distinction Point:
- Diameter < 6 mm: Falls under heading 7318.14.10.
- Diameter ≥ 6 mm: Falls under heading 7318.14.50.
- Note: "Socket" head type (Hex/Allen drive) is a sub-feature of the screw head but does not change the primary thread classification.
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Application Scenario | Diameter Criterion |
|---|---|---|---|
7318.14.10.60 |
Self-tapping screws of iron or steel; having shanks or threads with a diameter of less than 6 mm Other | Precision electronics, small appliances, thin-sheet metal assembly, automotive interiors | ✅ < 6 mm |
7318.14.50.80 |
Self-tapping screws of iron or steel; having shanks or threads with a diameter of 6 mm or more Other | Structural steel connections, heavy machinery, construction framing, large appliance manufacturing | ✅ ≥ 6 mm |
🔍 Important Reminder:
- The term "Other" in the description refers to screws that do not fall into other specific excluded sub-categories within the self-tapping group. - Both codes are classified as "Threaded Articles" of Iron or Steel. - Material Matters: If the screws are made of stainless steel, aluminum, or copper, they may fall under different headings. These codes apply specifically to Iron/Steel alloys.
💰 III. 2026 Latest Tariff Rate Details (Including Surcharges)
✅ Applicable Country: United States (US)
✅ Origin: China (CN) (Implied by the specific "Steel, Aluminum, Copper Products" surcharge mentioned in DATA)
✅ Effective Time: Current Active Rates
🎯 1. 7318.14.10.60 —— Small Self-Tapping Screws (< 6 mm)
| Item | Content |
|---|---|
| Base Tariff Rate | 0.0% (ad valorem) |
| Section 301 Surcharge | 0.0% (No additional 301 tariff listed for this specific subheading in the provided data) |
| Steel/Aluminum/Copper Surcharge | 50% (Specific surcharge for Steel products) |
| Total Tax Rate | 50.0% |
| Tax Calculation | CIF Value × 50% |
| Legal Basis Path | Base: 7318.14.10.60 → Surcharge: Steel Products 50% |
📌 Explanation:
- Although the base MFN rate is 0%, the 50% surcharge applies specifically to Steel articles under this classification. - This is a high duty rate for small hardware components. - The term "Steel" in the surcharge detail explicitly captures iron and steel alloys used in fasteners.
🎯 2. 7318.14.50.80 —— Large Self-Tapping Screws (≥ 6 mm)
| Item | Content |
|---|---|
| Base Tariff Rate | 0.0% (ad valorem) |
| Section 301 Surcharge | 0.0% (No additional 301 tariff listed for this specific subheading in the provided data) |
| Steel/Aluminum/Copper Surcharge | 50% (Specific surcharge for Steel products) |
| Total Tax Rate | 50.0% |
| Tax Calculation | CIF Value × 50% |
| Legal Basis Path | Base: 7318.14.50.80 → Surcharge: Steel Products 50% |
📌 Note:
- Like the smaller screws, large self-tapping screws of iron/steel are subject to the same 50% surcharge. - The diameter difference does not affect the tariff percentage, only the HS code classification. - Total Effective Rate: 50%.
🛠️ IV. Customs Clearance Practical Advice (Avoid Pitfalls Guide)
✅ 1. Required Documentation Checklist (Missing any will cause delays)
| Document | Must Provide | Description |
|---|---|---|
| ✅ Product Specifications | ✔️ | Must clearly state: Material (e.g., Carbon Steel 10B21), Head Type (Socket/Hex), Drive Type, Diameter, Length, Thread Pitch. |
| ✅ Material Certificate | ✔️ | Proof that the material is Iron or Steel. If Stainless Steel, HS codes will change! |
| ✅ Product Photos | ✔️ | Clear images showing the screw, head, thread, and packaging. |
| ✅ Commercial Invoice | ✔️ | Must describe as "Self-Tapping Screws, Steel, Socket Head" with precise HS codes. |
| ✅ Packing List | ✔️ | Weight and quantity per carton. |
| ✅ Declaration of Origin | ✔️ | If applicable for other markets, but for US, ensure no transshipment from prohibited entities. |
✅ 2. Declaration Tips (Key Mantras)
🔥 "Check Diameter, Confirm Steel, Declare Accurately, Avoid 50% Surprise!"
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| Screw diameter is 5.5mm | 7318.14.10.60 |
Misdeclaring as ≥6mm → Wrong code |
| Screw diameter is 6.0mm | 7318.14.50.80 |
Misdeclaring as <6mm → Wrong code |
| Material is Stainless Steel | Change HS Code | Declaring as Iron/Steel → Customs Seizure/Fine |
| Item is a Bolt (with Nut) | Different Category | Misdeclaring as Self-Tapping Screw → Wrong Classification |
✅ 3. Special Handling for Specific Cases
| Case | Handling Advice |
|---|---|
| Stainless Steel Screws | Do NOT use 7318.14.... These usually fall under 7318.15 or 7318.21 depending on type. The 50% steel surcharge may not apply, but different duties will. |
| Zinc-Plated or Coated Screws | Still classified as Iron/Steel fasteners. The coating does not change the HS code. |
| Complete Fastener Kits | If sold with nuts/washers, declare as the primary item (Screws) or as a "Set of Fasteners" if specifically defined. Usually, screws dominate the classification. |
| Mixed Diameters in One Shipment | Split Declaration: Clearly separate <6mm and ≥6mm items on the invoice and packing list to ensure correct HS code application. |
🌍 V. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification Requirement | Remarks |
|---|---|---|---|---|
| 🇺🇸 United States | 7318.14.10.60 or .50 |
50% (Steel Surcharge) | None specific for hardware | High duty due to steel surcharge |
| 🇨🇳 China | 7318.14.10 or .50 |
0-5% (depending on exact type) | CCC (if for safety-critical) | Lower duty for domestic trade |
| 🇪🇺 European Union | 7318.14.10 or .50 |
~2-5% | CE (if part of machinery) | No steel surcharge like US |
| 🇮🇳 India | 7318.14 |
~10-15% | BIS (for steel) | Varies by steel grade |
📌 Conclusion:
- The US market imposes a heavy 50% surcharge on steel fasteners like self-tapping screws. - Cost Impact: For every $1,000 CIF value, expect $500 in duties. - Strategy: Consider pricing strategies to absorb costs, or explore supply chain adjustments if margins are tight.
📌 VI. Common Errors & Pitfalls Guide (Lessons Learned)
❌ Error 1: Mixing "Stainless Steel" with "Iron/Steel" in one HS code
👉 Consequence: Stainless steel screws fall under different HS codes (e.g., 7318.15/21). Misclassification leads to rejection and fines.
❌ Error 2: Ignoring the 6mm diameter threshold
👉 Consequence: Using the wrong 8-digit code may trigger a manual inspection by customs, causing delays.
❌ Error 3: Not specifying "Self-Tapping"
👉 Consequence: If described only as "Socket Screws," customs may classify them as machine screws (7318.15) or bolts (7318.16), which have different duty rates and regulatory requirements.
❌ Error 4: Assuming "Aluminum" screws fall under Steel rules
👉 Consequence: Aluminum screws are NOT steel. They fall under Chapter 76. The 50% steel surcharge does NOT apply to aluminum. Misdeclaring aluminum as steel is fraud.
✅ Correct Practice:
"Self-Tapping Screws, Socket Head, Carbon Steel, Zinc Plated, Diameter 4.0mm, Length 10mm, Model XYZ, HS 7318.14.10.60"
🎯 VII. Conclusion: Professional Declaration Saves Money!
🎯 Remember the Mantras:
🔹 "Diameter Less Than Six, Code .60; Six or More, Code .80."
🔹 "Steel Screws Face Fifty Percent Duty in the US – Plan Your Budget!"
🔹 "Aluminum is Not Steel – Don't Pay the Steel Surcharge on Aluminum!"
📌 Pro Tip:
If your screws are made of Aluminum or Copper, ensure your HS code reflects Chapter 76 or 74, respectively. The 50% surcharge in the provided data is explicitly for Steel/Aluminum/Copper products, but the base codes
7318...are Iron/Steel.
Clarification from Data: The tax detail says "Steel, Aluminum, Copper Products Surcharge: 50%". This suggests that if you import steel fasteners (HS 7318), you pay 50%. If you import Aluminum fasteners (HS 7619), you might also face a 50% surcharge, but the HS Code would be different.
For this specific product (Socket Self-Tapping Screws of Iron/Steel):
- Use7318.14.10.60or7318.14.50.80.
- Apply 50% Total Tax.
📣 Immediate Action:
📞 Contact your freight forwarder + Provide Material Cert + Verify Diameter
🚀 Ensure accurate HS code selection to avoid 50% duty shocks and customs delays!
✨ Professional Clearance Starts with Accurate Classification!
💼 Every Cent Counts – Know Your Tariff!
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About HS Code Classification
The Harmonized System (HS) is an internationally standardized nomenclature developed by the World Customs Organization (WCO) to classify traded products. Over 200 countries use the HS system as the basis for customs tariffs, trade statistics, and import/export regulations.
Each HS code follows a hierarchical structure:
- Chapter (2 digits) — Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) — More specific grouping within the chapter
- Subheading (6 digits) — Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) — Country-specific extensions for further classification, such as US HTSUS 10-digit codes
Correct HS code classification is essential for smooth customs clearance, accurate duty payment, and compliance with trade regulations. Misclassification can lead to customs delays, overpayment of duties, or penalties.
When importing from CN to US, the applicable tariff rates may include:
- Most-Favored-Nation (MFN) rate — The standard duty rate applied to WTO members
- General rate — Applied to countries without trade agreements
- Trade remedy duties — Additional tariffs such as Section 301 (anti-dumping), Section 232 (national security), or countervailing duties
The information provided on this page is for reference purposes only. For official classification, please consult with your local customs authority or a licensed customs broker.