**Product Specifications**
Product Gallery
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About Our Company
Shenzhen Conghui Precision Hardware Co., Ltd. is a professional manufacturer specializing in precision industrial fasteners and accessory parts for over 15 years. We produce a wide range of screws, nuts, bolts, washers, rivets, anchors, and CNC parts, all adhering to international standards such as GB, ISO, DIN, JIS, AISI, NFE, and BSW. Our products are popular in North America, Southeast Asia, and Europe, used in machinery assembly, electronics, construction, and furniture manufacturing. We are committed to providing high-quality products and excellent service. We welcome long-term partnerships and offer free samples upon request (with shipping cost covered by the customer). We believe in mutual benefit and win-win cooperation. FAQ
1) **Q:** Are you a trading company or a manufacturer?
**A:** We are an industry and trade company.
2) **Q:** What’s your product range?
**A:** We provide screws, nuts, bolts, washers, rivets, anchors, and CNC parts. We follow various quality standards including GB, ISO, DIN, JIS, AISI, NFE, and BSW. Non-standard products are also accepted.
3) **Q:** Why should I choose you? What are your advantages?
**A:** With 9 years of experience in the fastener industry, we offer comprehensive solutions from design to after-sales support. Customer satisfaction is our top priority.
4) **Q:** In which industries are your products used?
**A:** Our products are widely used in machine assembly, electronics, construction, and furniture manufacturing.
Customer Service
· 1. No-questions-asked refund within 3 days.
· 2. Experienced and well-trained staff.
· 3. Short lead time.
· 4. International standard compliance.
· 5. OEM, ODM, and customized services available.
· 6. Small quantity orders accepted.
· 7. Customized designs based on customer needs.
· 8. Packaging and delivery tailored to customer requirements.
Feel free to contact us for any questions or special requests!
- Model NO.: CH-F004
- Type: Hexagon Head with Flange
- Head Style: Hex Head with Flange Bolt
- Grade: 4.8
- Finish: Blue-White Zinc Plated
- Certificate: ISO9001:2008, SGS Testing Report & RoHS
- OEM: Available
- Transport Package: General Export Package
- Origin: Guangdong, China
- Material: Carbon Steel
- Connection: Common Bolt
- Standard: DIN, ANSI, GB, JIS, BSW, GOST
- Application: Machinery, Chemical Industry, Environmental, Building
- Product Name: Steel Hex Flange Head Bolt M4-M20 (DIN6921)
- Payment Terms: T/T, Western Union, PayPal, etc.
- Trademark: CONGHUI
- Specification: M4-M20
- HS Code: 7318130000
Steel Hex Flange Head Bolt M4-M20 (DIN6921)
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Product Description
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| Product Name | Steel Hex Flange Head Bolt M4-M20 (DIN6921) |
| Material | Stainless Steel: SS201, SS303, SS304, SS316, SS410, SS420 Carbon Steel: 4.8, 6.8, 8.8, 10.9, 12.9 Titanium: GR1-GR5 Aluminum, Brass, etc. |
| Size | M4-M20 |
| Head Type | Flat, JIS pan, Oval, Round, Binding, I.HD, Brazier, PF. HD, Button, Fillister, Ansi.Pan, Pan washer, Indented Hex, etc. |
| Standard | ISO, GB, DIN, JIS, ANSI, BSW, ASME |
| Certificate | ISO9001:2008, SGS testing report & RoHS |
| Screw Drivers | Phillips, Slotted, Square, Crossed, Y-type, T-type, Torx, PZ drives, Hex socket, etc. |
| Finishing | Zn-plated, Ni-plated, Tin-plated, Radiant plated, Passivated, Brass plated, Cd-plated, Phosphate Anodize, Cr-plated, Black Oxide, etc. |
| Heat Treatment | Tempering, Hardening, Spheroidizing, Stress Relieving, etc. |
| Package | General export package, or as per customer requirements |
| Delivery Time | Approximately 7–15 days after confirmation, with fast delivery available for urgent orders |
| Customer Service | Replacement at our cost for rejected products if the part does not match the PO drawings |
Product Gallery
Other Products
About Our Company
Shenzhen Conghui Precision Hardware Co., Ltd. is a professional manufacturer specializing in precision industrial fasteners and accessory parts for over 15 years. We produce a wide range of screws, nuts, bolts, washers, rivets, anchors, and CNC parts, all adhering to international standards such as GB, ISO, DIN, JIS, AISI, NFE, and BSW. Our products are popular in North America, Southeast Asia, and Europe, used in machinery assembly, electronics, construction, and furniture manufacturing. We are committed to providing high-quality products and excellent service. We welcome long-term partnerships and offer free samples upon request (with shipping cost covered by the customer). We believe in mutual benefit and win-win cooperation. FAQ
1) **Q:** Are you a trading company or a manufacturer?
**A:** We are an industry and trade company.
2) **Q:** What’s your product range?
**A:** We provide screws, nuts, bolts, washers, rivets, anchors, and CNC parts. We follow various quality standards including GB, ISO, DIN, JIS, AISI, NFE, and BSW. Non-standard products are also accepted.
3) **Q:** Why should I choose you? What are your advantages?
**A:** With 9 years of experience in the fastener industry, we offer comprehensive solutions from design to after-sales support. Customer satisfaction is our top priority.
4) **Q:** In which industries are your products used?
**A:** Our products are widely used in machine assembly, electronics, construction, and furniture manufacturing.
Customer Service
· 1. No-questions-asked refund within 3 days.
· 2. Experienced and well-trained staff.
· 3. Short lead time.
· 4. International standard compliance.
· 5. OEM, ODM, and customized services available.
· 6. Small quantity orders accepted.
· 7. Customized designs based on customer needs.
· 8. Packaging and delivery tailored to customer requirements.
Feel free to contact us for any questions or special requests!
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