Our DIN933 Hex Bolts are high-precision industrial fasteners engineered for maximum strength and reliability in demanding environments. Manufactured using premium raw materials and advanced cold-forging technology, these fully threaded bolts ensure secure clamping and structural integrity for critical mechanical and construction applications.
With over 15 years of professional expertise in the fastener industry, we provide comprehensive customization options including various surface treatments and grade specifications. Whether you require standard DIN, ISO, or ANSI dimensions, our products are rigorously tested to meet international quality benchmarks, ensuring superior performance in automotive, railway, and household electrical appliances.
Detailed Parameters
| Main Standards | DIN 931, DIN 933, GB, ISO, ANSI/ASME, BS | Size Range | M5 - M64 |
|---|---|---|---|
| Length Range | 10mm - 600mm | Material Grade | 4.8, 8.8, 10.9, 12.9 |
| Raw Materials | Q235, Q195, 1035, 1045, 20MnTiB, 35Crmo | Surface Finish | Plain, Black, Zinc Plated, HDG, Dacromet |
| Certification | ISO9001, SGS | Packaging | 5kg, 10kg, 25kg carbon bag + pallet or customized |
| Loading Port | Tianjin, Qingdao, and others | Applications | Auto, Mechanical, Construction, Railway, Electrical |
Key Advantages
Industrial Grade Strength
Available in high-tensile grades up to 12.9, providing exceptional load-bearing capacity for heavy-duty machinery.
Corrosion Resistance
Advanced plating options like HDG and Dacromet ensure long-term durability in harsh outdoor environments.
Precise Engineering
Strict adherence to DIN and ISO standards ensures perfect fitment and seamless installation across platforms.
OEM Customization
Full support for non-standard requirements based on your technical drawings or physical samples.
100% Quality Control
Every batch undergoes rigorous IQC, PQC, and FQC inspections before final shipment.
Efficient Supply Chain
Optimized production process from wire drawing to loading, ensuring competitive lead times.
Product Gallery
Management Platforms
Material Sourcing
Strict selection of Q235, 1045, and alloy steels to ensure base material purity.
Cold Forging Process
Precision forming to maintain grain flow and enhance mechanical strength.
Surface Treatment
Automated coating lines for uniform thickness and superior salt spray endurance.
Precision Testing
Equipped with hardness, torque, and mechanical size testing apparatus.
Quality Inspection
Four-stage QC flow: Incoming → Process → Final → Pre-shipment.
Logistics Control
Strategic shipping from Tianjin and Qingdao ports for global distribution.
Investment Return Comparison
| Comparison Metric | Standard Fasteners | Our Premium DIN933 |
|---|---|---|
| Service Life | Medium | Extended (Anti-Corrosion) |
| Tensile Strength | Standard Grade | High-Grade (up to 12.9) |
| Dimensional Accuracy | ± 0.5mm | Strict DIN/ISO Tolerance |
| Installation Failure Rate | Moderate | Ultra-Low |
| Maintenance Cost | Periodic Replacement | Low Long-term Cost |
Frequently Asked Questions
DIN 933 refers to fully threaded hex bolts, while DIN 931 refers to partially threaded hex bolts. The choice depends on whether you need the bolt to be threaded all the way to the head.
For high-load structural or automotive applications, we recommend Grade 8.8, 10.9, or 12.9, depending on the required tensile strength and hardness.
Yes, we offer various surface treatments including Zinc plating, Hot-Dip Galvanizing (HDG), and Dacromet to prevent corrosion in humid or saline environments.
For hex bolts, the length is measured from the point where the head sits flat against the surface to the tip of the threads.
Yes, we specialize in OEM production. Please provide your technical drawings or physical samples, and our engineering team will handle the rest.
Delivery time depends on the order quantity and customization requirements. We strive to deliver as quickly as possible while maintaining 100% quality assurance.
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