DIN 6921 Hex Flange Bolt for Structural Steel Fabrication Needs
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| Customization: | Available |
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| Material: | Carbon Steel |
| Type: | Round Head |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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| Refund policy: | Claim a refund if your order doesn't ship, is missing, or arrives with product issues. |
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Basic Info.
- Model NO.
- DIN6921
- Connection
- Common Bolt
- Head Style
- Round
- Standard
- DIN, ANSI, GB, BSW, GOST, Round Head Bolt
- Grade
- 8.8
- Application
- Machinery, Chemical Industry, Environmental, Building
- Finish
- Hot Galvanizing
- MOQ
- 1000PCS
- Certification
- ISO9001
- Delivery Time
- 25 Days
- Durability
- Enhanced
- Sample
- Free
- Transport Package
- 25kg/Carton+Pallet
- Specification
- 1/2" M12
- Trademark
- FAST
- Origin
- Ningbo, Zhejiang
- HS Code
- 7318159001
- Production Capacity
- 2500 Tons/Month
Packaging & Delivery
- Package Size
- 25.00cm * 25.00cm * 13.50cm
- Package Gross Weight
- 25.000kg
Product Description
In industrial and pipeline engineering, a flange bolt is more than a fastening component - it is a critical element ensuring joint integrity, sealing performance, and operational safety. Flange bolt assemblies are specifically designed for flange connections where load distribution, vibration resistance, and long-term reliability are essential. Unlike standard hex bolts, flange bolts integrate bearing surfaces to improve stress distribution and reduce the risk of joint failure in demanding environments such as pipelines, pressure vessels, and industrial equipment.
At Sinofastener (FAST®), we manufacture flange bolts with the same precision and discipline applied to safety-critical components. Our engineering and production focus ensures:
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Connection Reliability: Each flange bolt is manufactured to achieve consistent mechanical properties, ensuring stable clamping force and reliable performance under pressure, vibration, and thermal variation.
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Sealing & Safety Compliance: Designed to meet international standards, our flange bolts help maintain flange sealing integrity and comply with stringent industrial and infrastructure codes.
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Engineering-Driven Supply: Backed by over 35 years of manufacturing experience, we don't simply supply fasteners - we deliver engineered fastening solutions trusted by EPC contractors, pipeline engineers, and industrial operators worldwide.
| Item | Hexagon flange bolts |
| standard | DIN6921 / EN1662 / GB16674 / GB5787 etc. |
| Size Range | M3-- M20 /10#-32 --5/8-11 etc. |
| Property Class | Grade 8.8 / Grade 10.9 /A2-70/A2-40 etc. |
| Surface Treatment | Hot-Dip Galvanized / Zinc Plated / Plain etc. |
| Certification | ISO9001:2013,ISO9001-2000 |
| Applications | Automotive, Construction, Machinery parts, Furniture, Electrical components, etc. |
| web | sinofastener.en.made-in-china.com |
| Brand | FAST® |
| Advantage | Ultra low EU tariffs |
| Global Express | china or Malavsia hubs |
Q1. What are your main products?
China fastener manufacturer, bolts, screws, threaded rods, nuts, washers, anchors, rivets, stamping parts, machined parts, sinofastener, zlfastener, hardware, bolt and nut, carbon steel, stainless steel.
Q2. How do you ensure quality in every process?
QC inspection every production step, strict quality control, MTC, mill certificate, ISO idea, sinofastener factory inspection, China fastener manufacturer quality assurance.
Q3. What is your delivery time for fasteners?
30-45 days delivery time, flexible according to order quantity, China bolts nuts screws lead time, OEM/ODM fastener delivery, Ningbo port shipment.
Q4. What are your payment terms?
30% T/T in advance, 70% balance against B/L copy, small order under 1000 USD 100% in advance, reduce bank charges, safe payment, trade assurance, fastener order payment.
Q5. Can you provide samples of bolts and nuts?
Free samples for standard fasteners, new customer pay express cost, China bolt nut sample, sinofastener sample policy.
Q6. Are you a manufacturer or trading company?
Sinofastener is a fastener manufacturer in Ningbo China, many years experience in bolts, nuts, threaded rods, washers, OEM/ODM factory, china supplies, zlfastener, hardware producer.
Q7. Do you provide OEM/ODM service for fasteners?
Yes, OEM/ODM accepted, custom screws, custom bolts, special nuts, carbon steel and stainless steel fasteners, drawing and sample production, China OEM fastener supplier.
Q8. How is your price for screws, bolts and nuts?
High quality fasteners with reasonable price, factory direct price, competitive China supplier, quick quotation after inquiry, sinofastener best cost performance.
Q9. How do you control your fastener quality?
QC inspect every production link for each batch, full process control from raw material to packing, provide MTC and mill certificate, stable quality, reliable China fastener manufacturer.
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