Double-End Studs
Double-end threaded studs with unthreaded center section, designed for flange connections, equipment mounting, and high-temperature applications. Manufactured to precise tolerances for reliable joint integrity.
Key Advantages
Lead Time
15-25 Days
MOQ
1,000 pieces (standard) | 5,000 pieces (custom)
Sample
Available
Technical Specifications
| Parameter | Value |
|---|---|
| Standard | DIN 938 / DIN 939 / ASTM A193 B7 |
| Size Range | M8 – M48 |
| Length | 50 – 500 mm |
| Material | Alloy Steel / Stainless Steel |
| Grade | 8.8 / 10.9 / B7 / B8 |
| Temperature | Up to 540°C (B7 grade) |
Material Information
Available Sizes & Customization
We offer a wide range of standard sizes and specifications. Custom dimensions, materials, and finishes are available upon request.
Application Scenarios
Flange and pipe connections
Pressure vessel assembly
Engine and turbine mounting
Petrochemical equipment
Manufacturing Process
Raw Material Selection
Premium stainless steel (304/316) and carbon steel sourced from certified mills
Cold/Hot Forging
Precision forging processes to achieve optimal grain structure and mechanical properties
CNC Machining & Threading
High-precision CNC lathes for threading, turning, and milling to DIN/ANSI standards
Heat Treatment
Controlled heat treatment for specified hardness, tensile strength, and proof load
Surface Treatment
Zinc plating, hot-dip galvanizing, passivation, or custom coating per requirements
Quality Testing & Packaging
Dimensional verification, salt spray testing, tensile testing, and export packaging
OEM & Custom Fastener Services
We manufacture custom fasteners and hardware to your exact specifications. Whether you need non-standard dimensions, special materials, or unique head styles, our engineering team can deliver.
Our Capabilities
Quick Reference
| Minimum Order Quantity | 1,000 pieces (standard) | 5,000 pieces (custom) |
| Lead Time | Standard: 7-15 days | Custom: 20-30 days |
| Sample Availability | Free samples of standard items available; custom samples within 5-7 days |
| Payment Terms | T/T, L/C, Western Union |
| Trade Terms | FOB, CIF, DDP, EXW |
Packaging & Delivery
Hardware products are packaged to prevent damage, corrosion, and mixing during transit. We offer flexible packaging options for different order sizes.
Packaging Options
- Individual polybag packaging with labels
- Box packaging (25kg/50kg standard cartons)
- Bulk packaging in drums or pallets
- Custom retail packaging with your branding
Shipping Methods
- FOB
- CIF
- DDP
- EXW
Loading Ports: Shanghai Port, Ningbo Port, Qingdao Port
Export Experience
- Exported to 50+ countries
- 15+ years of export experience
- Professional export documentation
- Experienced freight forwarder network
Quality Control
Every batch of hardware products undergoes rigorous quality inspection to ensure compliance with international standards.
Inspection Process
Material Certification
Mill test certificates verified for chemical composition and mechanical properties
Dimensional Inspection
Thread gauges, micrometers, and CMM verification against specifications
Mechanical Testing
Tensile strength, proof load, hardness, and wedge loading tests per ISO 898
Surface Quality Check
Salt spray testing, coating thickness measurement, and visual inspection
Packaging Inspection
Quantity verification, labeling accuracy, and packaging integrity check
Certifications & Standards
Factory Capabilities
Factory Area
8,000 m²
Export Markets
50+ Countries
Experience
15+ Years
Annual Capacity
10,000 tons
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