Carriage Bolt (DIN 603) Supplier
Carbon Steel Carriage Bolt (DIN 603). Round head, square neck, full thread. Size range M5–M20. Factory direct pricing with ISO 9001 certification.

Quick Specifications
Material
Carbon Steel
Type
Round head, square neck, full thread
Size Range
M5–M20
Surface Finish
Plain / Zinc-plated / H.D.G
Grade
4.8
Product Overview
Carriage Bolt (DIN 603) is a high-quality fastener manufactured from Carbon Steel. Round head, square neck, full thread. Designed for industrial applications requiring reliable performance and durability.
Available in size range M5–M20, with surface finish options including Plain / Zinc-plated / H.D.G. Meets international standards 4.8.
All products are manufactured under strict quality control and ISO 9001 certification, ensuring consistent quality and reliability.

Dimensional Specifications
Carriage Bolt (DIN 603) – Metric Thread Sizes
| Thread Size | Pitch (mm) | Width (mm) | Height (mm) |
|---|---|---|---|
| M5 | 13 | 10 | 8 |
| M20 | 5 | 26 | 17 |
Applications
Construction
Steel structures, bridges, buildings, concrete anchors
Machinery
Heavy equipment, industrial machines, manufacturing
Infrastructure
Railways, towers, pipelines, power transmission
Automotive
Vehicle assembly, chassis, engine components
Quality Assurance
ISO 9001 Certified
Strict quality management system
Material Certificates
EN 10204 3.1 certificates available
100% Inspection
Dimensional and visual inspection
Professional Packaging
Carton & Pallet
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