DIN 603 Cold Forged Carbon Steel Square Neck Carriage Bolts

Product Overview

The DIN 603 Cold Forged Carbon Steel Carriage Bolt is a robust fastener designed for heavy-duty applications in construction, machinery, and infrastructure projects. The cold forging process increases material density and tensile strength for superior load-bearing performance.

The signature square neck design prevents rotation during installation, ensuring secure fastening in wood, metal, and masonry.

Key Features:

Anti-Rotation Security: Square neck grips material firmly, eliminating spinning during nut tightening.

Enhanced Strength: Cold forged construction delivers higher tensile strength and fatigue resistance.

Versatile Finish Options: Available in zinc plated, black oxide, galvanized, and more for excellent corrosion protection.

Technical Specifications:

Property	Specification
Product Name	Square Neck Carriage Bolt
Standard	DIN 603
Material	Carbon Steel (Custom: Stainless Steel, Brass, Aluminum)
Grade	4.8, 6.8, 8.8, 10.9, 12.9
Finish	Zinc Plated, Black Oxide, Galvanized, Natural
Size Range	Up to 350mm Length (Customizable)
Thread Type	Metric, Imperial (UNC/UNF)
Brand	HANGFAN

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Detailed Product Gallery

Manufacturing & Quality Control

Advanced Cold Heading
Precision manufacturing.

Optical Sorting
0-PPM defects.

Lab Testing
Tensile & Salt Spray.

Project References

Construction (USA)
Wood & Masonry Fastening

Infrastructure (Europe)
Heavy-Duty Structural Support

Machinery (Global)
Anti-Rotation in Equipment

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 603 (compatible with ISO/GB). MOQ is flexible (1000 pcs for standard items).

Q: What certifications do you have?
We are ISO9001:2015 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.