Hex Long Nut

🛠️ Hex Long Nut (六角长螺母)

🌐 HS Code Reference & Customs Clearance Guide | 2026 Updated Tariff Analysis | Professional Import Strategy
📌 One, Product Definition & Classification: What Exactly Is a "Hex Long Nut"?

A hex long nut (六角长螺母) is a threaded fastener with a hexagonal (six-sided) head and a longer body than standard nuts. It's used in industrial, mechanical, and structural applications where extended thread engagement is required—especially in high-vibration or high-load environments.

In international trade, it's classified under threaded fasteners, and its precise HS Code depends on: - Material (copper, steel, aluminum) - Diameter of shank/thread/hole - Whether it's made of iron/steel or copper - Whether it's part of a larger assembly

⚠️ Key Distinction:
- Shank, thread, or hole diameter ≥ 6 mm → Different HS Code
- Shank, thread, or hole diameter < 6 mm → Different HS Code

📦 Two, HS Code Classification Details (2026 Updated Tariff Authority)

🔍 Critical Insight:
- Copper or copper-clad nuts ≥ 6 mm → 7415.33.80.10 → 50% tax
- Copper or copper-clad nuts < 6 mm → 7415.33.80.50 → 50% tax
- Aluminum nuts (any size) → 7616.10.70.30 or 7616.10.90.30 → 0% tax
- Iron/Steel nuts (any size) → 7318.16.00.85 → 57.5% tax

💰 Three, 2026 Updated Tariff Breakdown (With附加 Taxes & Policies)

✅ Applicable Country: United States (US)
✅ Origin: China (CN), Vietnam (VN), Mexico (MX), etc.
✅ Effective Date: November 10, 2025 (and onward)

🎯 1. 7415.33.80.10 — Copper Nut (Shank/Thread/Hole ≥ 6 mm)

📌 Explanation:
- This is a copper-based fastener with large dimensions (≥6 mm). - The 50% additional tariff applies under Section 301 and IEEPA for copper, steel, and aluminum products from China. - No de minimis exemption → even small shipments face full tax.

🎯 2. 7415.33.80.50 — Copper Nut (Shank/Thread/Hole < 6 mm)

📌 Note:
- Even small copper nuts (under 6 mm) are hit with 50% tariff. - Size doesn’t matter — only material and origin do. - This applies to all copper fasteners regardless of size.

🎯 3. 7616.10.70.30 — Aluminum Nut (≥ 6 mm)

📌 Key Advantage:
- Aluminum nuts are exempt from the 50% steel/aluminum/copper tariff. - Even large aluminum nuts (≥6 mm) are 0% tariff. - Great for cost optimization — switch from copper/steel to aluminum if possible.

🎯 4. 7616.10.90.30 — Other Aluminum Nuts (Any Size)

📌 Use Case:
- Ideal for small aluminum nuts, custom shapes, or non-standard sizes. - No size limit, no tax — perfect for lightweight, high-volume applications.

🎯 5. 7318.16.00.85 — Iron/Steel Nut (Any Size)

📌 Warning:
- Iron/steel nuts are the most heavily taxed. - 7.5% base + 50% IEEPA = 57.5% total. - No exemption, even for small quantities. - Avoid this HS Code if possible.

🛠️ Four, Customs Clearance Best Practices (Real-World Tips)

✅ 1. Required Documentation (Must-Have Checklist)

✅ 2.申报技巧 (Smart申报 Tips)

🔥 "Material First, Size Second, Origin Last — Tax Depends on All Three!"

📌 Pro Tip:
- Switch to aluminum if your application allows — zero tariff. - Use Vietnam/Mexico as origin if possible — avoid China-based IEEPA tariffs.

✅ 3. Special Cases & Solutions

🌍 Five, Global Market Comparison (2026)

📌 Insight:
- Only the US imposes the 50% IEEPA tariff on copper/steel. - Aluminum is always safe in the US. - China-origin copper/steel nuts face 50–57.5% tax.

📌 Six, Common Mistakes & How to Avoid Them (Real-World Pitfalls)

❌ Mistake 1: Using 7318.16.00.85 for a copper nut
👉 Result: 57.5% tax instead of 50% → extra 7.5% cost

❌ Mistake 2: Not checking diameter (≥6 mm vs <6 mm)
👉 Result: Wrong HS Code → penalties, delays, or reclassification

❌ Mistake 3: Declaring aluminum nut as "copper" to save cost
👉 Result: Fraud risk → fines, blacklisting

❌ Mistake 4: Mixing copper and aluminum in one shipment
👉 Result: All items taxed at highest rate → total loss

✅ Correct Approach:

"Hex Long Nut, M10×1.5, 30 mm length, Copper, Thread Diameter 10 mm, Certified to ISO 4032, Origin: China"

🎯 Seven, Conclusion: Precision Pays Off!

🎯 Remember the Golden Rule:

🔹 Material > Size > Origin > Declaration
🔹 Copper: 50% tax | Steel: 57.5% tax | Aluminum: 0% tax
🔹 Size matters only to split copper nuts
🔹 De minimis applies to aluminum, not copper/steel

📌 Pro Tip:

If you're sourcing from China, switch to aluminum or Vietnam/Mexico origin to avoid 50%+ tariffs.
Apply for an Advance Ruling — lock in your HS Code and avoid surprises.

📣 Take Action Now:

📞 Contact a licensed customs broker + provide product specs + request HS Code pre-ruling
🚀 Reduce your tariff from 57.5% to 0% — just by switching material or origin!

✨ Smart Classification = Lower Costs = Faster Shipments = Higher Profits!
💼 Your next shipment could save thousands — start with the right HS Code!