Our DIN933 Hex Bolts are engineered for high-strength fastening applications, providing exceptional structural integrity across various industrial sectors. Manufactured with precision, these fully threaded bolts ensure a secure hold and consistent tension, making them an essential component for mechanical assembly, construction, and automotive fasteners.
With over 15 years of specialized experience in fastener manufacturing, we provide a comprehensive range of sizes from M5 to M64. Whether you require standard DIN, ISO, or ANSI specifications, our products are crafted from premium raw materials like 35Crmo and 20MnTiB to meet the most demanding industrial requirements and global quality certifications.
Detailed Parameters
| Product Series | DIN931 / DIN933 Hex Bolt | Size Range | M5 - M64 |
|---|---|---|---|
| Length Range | 10mm - 600mm | Surface Treatment | Plain, Black, Zinc plated, HDG, Dacromet |
| Global Standards | DIN, GB, ISO, ANSI/ASME, BS | Material Grades | 4.8, 8.8, 10.9, 12.9 |
| Raw Materials | Q235, Q195, 1035, 1045, 20MnTiB, 35Crmo | Certifications | ISO9001, SGS |
| Packaging Options | 5kg, 10kg, 25kg bags with pallets | Loading Ports | Tianjin Port, Qingdao Port, etc. |
Key Advantages
Premium Durability
Utilizing high-grade alloys and rigorous heat treatment to ensure maximum tensile strength and longevity.
Efficient Delivery
Optimized production cycles to guarantee the fastest possible delivery without compromising quality.
Precision Engineering
Strict adherence to international standards (DIN/ISO/ANSI) for perfect fit and compatibility.
Anti-Corrosion Finish
Advanced surface treatments including HDG and Dacromet for superior rust resistance in harsh environments.
100% Quality Inspection
Every batch undergoes rigorous QC checks, including salt spray and torque testing before shipment.
OEM Customization
Flexible manufacturing capabilities to produce non-standard fasteners based on your drawings or samples.
Product Gallery
Management Platforms
Raw Material Control
Strict incoming quality control for all steel wire and alloy materials to ensure base strength.
Cold Forging Process
Precision cold forging equipment ensures dimensional accuracy and high structural density.
Surface Treatment
Controlled plating and coating environments to ensure uniform thickness and corrosion protection.
Hardness Testing
Systematic hardness and torque tests to verify that each grade meets the specified mechanical properties.
Final QC Audit
Comprehensive pre-shipment inspection covering dimensions, thread quality, and surface finish.
Logistics Management
Professional packing and palletizing to prevent transit damage and facilitate easy unloading.
Investment Return Comparison
| Performance Metric | Standard Fasteners | Our Premium Bolts |
|---|---|---|
| Tensile Strength | Basic Grade | High-Grade (Up to 12.9) |
| Corrosion Life | Short-term | Extended (HDG/Dacromet) |
| Dimensional Tolerance | Standard | Precision-Engineered |
| Installation Fit | Variable | High Precision/Consistent |
| Maintenance Cost | Higher Frequency | Significantly Reduced |
Frequently Asked Questions
DIN933 bolts are fully threaded from the head to the end, whereas DIN931 bolts have a partially threaded shank. Both are used for high-strength fastening depending on the application requirement.
Yes, we provide full OEM services. If you provide a detailed drawing or a physical sample, our engineering team can produce non-standard fasteners tailored to your exact specifications.
For outdoor or high-humidity environments, we recommend Hot Dip Galvanized (HDG) or Dacromet coatings, as they provide the superior salt spray endurance required for weather resistance.
We use professional alloy steels (like 35Crmo) and perform rigorous hardness and torque tests. Every batch is 100% inspected by our QC department before shipping.
Our bolts are widely used in automotive assembly, heavy machinery, railway construction, household electrical appliances, and general structural steelwork.
We can provide free samples for standard fastener products. However, the client is responsible for the express shipping charges.
Ready to Secure Your Project with High-Precision Fasteners?
Contact Us
