DIN 931 hexagon bolts, also known as partial thread hex head bolts, are widely used in automotive, construction, and heavy machinery industries. These high-tensile fasteners provide superior strength, corrosion resistance, and easy installation with a hexagonal head design.
Table of Contents
Introduction
DIN 931 hexagon bolts are high-strength fasteners designed for structural and industrial applications requiring secure connections with high load-bearing capacity. These bolts feature a partially threaded shank, allowing for greater shear strength and flexibility in assembly. Their hexagonal head ensures easy tightening with standard tools, making them a popular choice in engineering and mechanical applications.
Key Features
- Partially Threaded Shank: Provides better load distribution and shear resistance.
- High Tensile Strength: Manufactured in 8.8, 10.9, and 12.9 strength classes.
- Hexagonal Head: Allows easy tightening and loosening with standard wrenches.
- Corrosion Resistance: Available in zinc-plated, hot-dip galvanized, and stainless steel finishes.
- Versatile Applications: Suitable for automotive, construction, and heavy machinery industries.
Material and Classification
DIN 931 bolts are produced using high-quality steel and stainless steel alloys for maximum durability and load resistance.
| Material Type | Strength Class | Coating Options |
|---|---|---|
| Carbon Steel | 8.8, 10.9, 12.9 | Zinc-Plated, Galvanized, Black Oxide |
| Stainless Steel | A2, A4 | Polished, Passivated |
| Alloy Steel | 10.9, 12.9 | Heat-Treated, Phosphated |
Applications
DIN 931 hexagon bolts are widely used in various industries, providing secure and reliable fastening solutions.
- Automotive Industry: Used in engine assemblies, frames, and suspension systems.
- Construction & Infrastructure: Essential for steel frameworks, bridges, and load-bearing structures.
- Heavy Machinery: Ideal for gearboxes, hydraulic systems, and industrial equipment.
- Manufacturing & Assembly: Provides secure fastening for machine components.
Advantages
- Enhanced Shear Strength: Partially threaded design reduces stress concentration.
- Reliable Performance: Meets DIN 931 and ISO 4014 standards for consistent quality.
- Easy Installation: Hexagonal head ensures quick assembly and disassembly.
- Rust and Corrosion Protection: Available in various coatings for extended lifespan.
Compliance & Specifications
DIN 931 hexagon bolts adhere to strict international manufacturing standards, ensuring quality and compatibility across various applications.
- DIN 931 – Metric hexagon bolts with partial threads.
- ISO 4014 – Equivalent international specification.
- EN 14399 – Compliance for structural bolting applications.
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- Certified Manufacturing & Compliance with global standards.
- Custom Sizes & Coatings to meet specific project needs.
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