Hex Flange Bolt (DIN 6921) | Serrated & Non-Serrated | Carbon/Stainless Steel

Product Overview

The Hex Flange Bolt (DIN 6921) integrates a hexagonal head with a washer-like flange, eliminating the need for a separate washer. This design provides a larger bearing area to distribute clamping load evenly, protecting the mating surface and ensuring a secure hold.

Manufactured from high-strength Carbon Steel or Stainless Steel, these bolts are engineered for high-vibration environments such as automotive engines, heavy machinery, and structural frameworks.

Key Features:

Vibration Resistance: The flange design (available with serrations) acts as a locking mechanism, preventing loosening under shock and vibration.

Efficiency: One-piece construction saves assembly time by eliminating the need for separate flat or lock washers.

Durable Finishes: Available in Zinc Plated (YZP/BZP), Black Oxide, or Hot Dipped Galvanized (HDG) for superior corrosion protection.

Technical Specifications:

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Technical Drawing (DIN 6921)

Detailed Product Gallery

Manufacturing & Quality Control

Advanced Cold Heading Precision manufacturing.

Optical Sorting 0-PPM defects.

Lab Testing Tensile & Salt Spray.

Project References

Interior Decoration (USA) Hanging Heavy Fixtures

Ceiling System (Europe) Light Fixture Support

Automotive (Germany) High Strength Fasteners

Frequently Asked Questions

Q: Can I get free samples?

Yes! We provide free samples for standard fasteners. You only need to cover the shipping cost.

Q: What standards and MOQ do you support?

Mainly DIN 6921 and ISO 4161. MOQ is flexible (500 kgs/1000 pcs) for standard items.

Q: What certifications do you have?

We are CE Certified. Every shipment comes with a Factory Quality Inspection Report.

Q: What is your delivery time?

Stock items: 3-7 days. Mass production: 20-30 days.

Q: Can you produce according to drawings?

Yes, OEM/ODM is our strength. Send us CAD drawings for a quote within 24 hours.

Q: What are your payment terms?

We generally accept T/T (30% deposit, 70% before shipment). For long-term partners, we can discuss L/C.