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**Round Head Square Neck Carriage Bolt**
**Model No.:** RK-CB-01
**Application:** Machinery, Chemical Industry, Environmental, Building, Construction
**Finish:** Passivation
**Customized:** Yes
**Lead Time:** 3-10 Days
**Stock Products:** Available
**Trade Terms:** EXW/Fob Zhongshan
**Trademark:** Rankoo
**Transport Package:** Box + Carton + Pallet
**Specification:** M6-M12 / 1/4-1/2
**Origin:** China
**HS Code:** 73181510
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**Product Details:**
**Standard:** DIN603 / GB12 / ANSI B18.5
**Material:** SS304, SS316
**Diameter:** M6~M12
**Head Shape:** Round
**Screw Thread:** Coarse Thread
**Screw Tip:** Flat Point
**Finish:** A2-70 / A2-80 / A4-70 / A4-80
**Features:** Excellent corrosion resistance
**Grade:** A2, A4
**Certification:** ISO9001:2008, SGS, RoHS, Bureau Veritas
**OEM Service:** Available
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**Technical Data:**
| Specification | M6 | M8 | M10 | M12 |
|-------------|----|----|-----|-----|
| Thread Distance | 1.00 | 1.25 | 1.50 | 1.75 |
| Head Diameter (max) | 16.55 | 20.65 | 24.65 | 30.65 |
| Neck Width (max) | 6.48 | 8.58 | 10.58 | 12.7 |
| Square Neck Deep (max) | 4.60 | 5.60 | 6.60 | 8.75 |
| Thickness (max) | 3.88 | 4.88 | 5.38 | 6.95 |
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**Product Detail:**
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**Factory Introduction:**
Our main factory is located in Xinghua City, Jiangsu Province, and has been in the fastener industry since 2002. We are also a branch in Zhongshan City. To ensure quick service for domestic customers, we maintain a warehouse in Zhongshan, allowing us to respond within 24 hours. For overseas clients, standard products can be delivered within 3 days, while non-standard items take around 15 days.
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**Package and Shipment:**
Our standard packaging includes neutral white inner boxes and outer cartons. Typically, 6 pieces per box, with an outer carton size of 27x27x17 cm. Pallets are used if the product is heavy. Colorful boxes may incur additional charges.
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**FAQ:**
**A: Are you a factory or a trader?**
We are a manufacturer with our main factory located in Xinghua City, Jiangsu Province, and we have a branch in Zhongshan City.
**B: What is your MOQ?**
For standard products, 1 piece is acceptable.
**C: Can I have my own design products?**
Yes, we offer OEM services and can provide custom-made products as well.
**D: How is your lead time?**
For standard products, we usually have stock available. Domestic orders can be delivered within 24 hours, and international orders within 3 days. For non-standard or out-of-stock items, the lead time is typically around 15 days.
**E: Do you have a website where I can see new products?**
Yes, our website is [www.rankoofastener.com](http://www.rankoofastener.com). You can view our latest products there or through our site.
**F: Do you produce other materials?**
No, we only manufacture stainless steel fasteners.