**Black Socket Head Shoulder Hex Head Cap Screw/Bolt**
**Product Specifications:**
- **Model No.:** WJ0120-4
- **Grade:** 6.8
- **Trademark:** Other
- **Transport Package:** Plastic Bag + Carton Box + Wood Pallet
- **Specification:** M6
- **Origin:** China
- **HS Code:** 7318150000
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**Product Description:**
The Black Socket Head Shoulder Hex Head Cap Screw/Bolt is a high-quality fastener designed for a wide range of industrial and mechanical applications. It features a strong, durable structure with a black finish that enhances its resistance to corrosion and wear. The shoulder design provides additional strength and stability, making it ideal for use in environments where vibration or movement may occur.
This screw is manufactured according to international standards such as DIN, ANSI, JIS, BSW, ISO, and GB, ensuring compatibility and reliability across different industries. It is available in multiple grades and materials, including carbon steel, stainless steel, brass, and more, allowing for customization based on specific requirements.
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**Materials Used:**
- **Carbon Steel:** C1006, C1008, C1010, C1016A, C1018A, C1022, C1035K, C1045K
- **Iron:** 1213, 12L14, 1215
- **Stainless Steel:** SS201, SS202, SS302, SS303, SS304, SS316, SS410, SS420, SS430
- **Alloy Steel:** SCM435, 10B21, 40Cr
- **Brass or Brass Alloy:** H63 (CuZn37), H65 (CuZn35), H68 (CuZn33), H70 (CuZn30), H90 (CuZn10)
- **Bronze:** C51000, C52100, C54400
- **Aluminum or Aluminum Alloy:** Al6061, Al6063
- **Titanium and Titanium Alloy:** TAD, TA1–TA8, TB2, TC1–TC10
- **Silver and Silver Alloy:** AgCu3, AgCu7.5, AgSn3–5, AgPb0.4–0.7, AgPd3–5, AgNi10
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**Surface Finish Options:**
- Zinc Plated
- Nickel Plated
- Brass Plated
- Tin Plated
- Black Plated
- Copper Plated
- Hot-Working (Hardness up to 6.8/8.8, 9.8, 10.9, 12.9 grades)
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**Size Range:**
- M0.8 to M20
- Custom sizes available upon request
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**Heat Treatment:**
- Material modification
- Carburized
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**Manufacturing Process:**
Wire drawing → Cold heading → Threading → Heat treatment → Surface plating → Packing
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**Sample Availability:**
- Samples are available upon request. For customized products, tooling and proofing charges may apply.
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**Port of Shipment:**
- Shenzhen, China
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**Packing:**
- Carton packing with inner sealed polybag and stripe pack on the surface
- Or pallet packing
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**Minimum Order Quantity:**
- Accepts small test orders
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**Payment Terms:**
- FOB, CIF, CFR, EXW
- Payment methods: T/T, L/C, Western Union, PayPal, etc.
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**Lead Time:**
- 10–35 days depending on order quantity and specifications
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**Performance Features:**
- Sharp teeth dig into surfaces to resist vibration and keep screws tight
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**Certifications:**
- ISO standard
- SGS report, material quality report, plating certification, and finished inspection report available
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**After-Sales Service:**
- We follow up on all customer requests and provide support after the sale
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**Notice:**
- For customized products, please provide size, quantity, grade, and finish
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**FAQ:**
**Q1: Are you a manufacturer or trading company?**
**A:** We are a specialized manufacturer of fasteners with over 11 years of experience. We produce bolts, studs, rivets, pins, and stamping parts, offering a wide range of custom non-standard fasteners. Our factory is located in Dongguan City, Guangdong Province, near Shenzhen or Guangzhou.
**Q2: How about your price?**
**A:** As a non-standard screw fastener factory, we offer direct production. By working closely with raw material manufacturers and processing factories, we eliminate intermediate costs and ensure high-quality products at competitive prices.
**Q3: What kind of materials do you use?**
**A:** We use carbon steels (low and medium carbon), alloy steels, stainless steel, and brass.
**Q4: Do you support customized products?**
**A:** Yes, we can produce according to your drawings.
**Q5: Do you produce standard or non-standard bolts?**
**A:** We produce both standard and custom bolts. We also have regular production for ANSI and DIN standard bolts.
**Q6: Can we print our own logo?**
**A:** Yes, we can customize it according to your request.
**Q7: Can you provide samples?**
**A:** For regular products, we offer free samples. For customized bolts, tooling and proofing charges may apply. All free samples do not include courier charges.
**Q8: How do you ensure quality?**
**A:** We implement strict ISO quality control with 8 steps of checking during production. We have in-house QC daily and third-party inspections for random checks.
**Q9: What is the lead time?**
**A:** Typically 30–50 days after deposit.
**Q10: What are your payment terms?**
**A:** T/T, cash, Western Union, or L/C.
**Q11: Do you have after-sales service?**
**A:** Of course, you can contact us anytime.
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*Please feel free to reach out for more information or to place an order.*
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