In the world of heavy-duty fasteners, the M25 stud bolt holds a crucial position across industries such as construction, oil & gas, energy, and heavy machinery. Designed to deliver exceptional load-bearing capacity, this bolt size is engineered for precision in structural integrity and long-term reliability.
🔩 What Is an M25 Stud Bolt?
An M25 stud bolt is a fully threaded rod or double-ended bolt with a 25mm nominal thread diameter, commonly used to connect two flanged components through nuts on both ends. It provides a robust, vibration-resistant connection ideal for critical applications.
Stud bolts are typically used in conjunction with heavy hex nuts and flat washers, ensuring uniform load distribution and torque performance.
✅ Key Features
- Thread Size: M25 (25mm major diameter)
- Thread Type: Metric coarse or fine pitch as per DIN, ISO, or ANSI standards
- Length Options: Customized lengths ranging from 50mm up to 1000mm or more
- Material Options:
- Carbon steel (Grade 4.8 / 8.8 / 10.9)
- Alloy steel (B7, B16)
- Stainless steel (SS304, SS316)
- Heat-resistant steel for high-temperature applications
- Surface Treatments:
- Black oxide
- Zinc plating
- Hot-dip galvanized
- PTFE coating for anti-corrosion environments
- Standards:
- DIN 975 / DIN 976
- ASTM A193 / A320
- ISO 898
- GB/T 897 / 899
🛠 Common Applications
- Petrochemical Plants – Used in flange connections and pipe spools
- Steel Structures – Ideal for load-bearing joints and anchor bolts
- Pressure Vessels – Ensures safe sealing under high pressure
- Wind and Solar Projects – Offers long-term performance in outdoor installations
- Machinery Assembly – Maintains alignment and strength under dynamic loads
🌍 Why Choose the M25 Size?
The M25 stud bolt strikes a balance between thread surface contact area and mechanical strength, making it a preferred choice in both high-pressure and high-vibration settings. Its size offers:
- High tensile strength
- Uniform torque distribution
- Compatibility with a wide range of flanges and joints
- Excellent performance under both axial and shear loads
📦 Available Customizations
- Ends: Plain, chamfered, or chamfer + radius
- Threads: Fully threaded or double-ended partial thread
- Nut Compatibility: DIN 934, ISO 4032, or customized per application
- Markings: Grade, size, or client-specific stamps
- Packing: Bulk, small boxes, or palletized – as per order size
🚀 Fast Delivery, Small Batches Supported
Manufacturers today often offer factory direct supply with:
- No strict MOQ limits
- Short production cycles
- Quality inspection reports
- Global shipping options
This makes it easier for project teams to source M25 stud bolts for urgent jobs or custom installations.
🔚 Conclusion
If your application demands strength, reliability, and precision, the M25 stud bolt is an outstanding choice. Whether it’s a standard fastener or a fully customized solution, this bolt delivers dependable performance in even the harshest environments.
Choose M25 stud bolts for your next heavy-duty connection — engineered to last, built to perform.