| Feature | Threaded Rod (DIN 975) | Stud Bolt (ASTM A193 / DIN 976) |
|---|---|---|
| Typical Length | 1 meter to 3 meters | Custom cut to exact flange requirements (e.g., 100mm - 300mm) |
| Primary Use | HVAC suspension, ceiling drops, bracing | High-pressure flanged connections, valves |
| Materials | Mostly Mild Steel (4.6), SS304, HDG | High-tensile Alloy Steel (B7, B16, L7) |
| Ends | Rough cut, no chamfer | Precision chamfered on both ends to accept nuts easily |
| Traceability | Usually bulk commodity | High traceability (Heat stamped on ends) |
The Verdict
Use threaded rods as a versatile, cut-to-length commodity for suspending lightweight infrastructure like pipes and cable trays. Use purpose-built, chamfered stud bolts for high-pressure flanges in the oil & gas industry.
Frequently Asked Questions
Can I cut a threaded rod to make a stud bolt for a flange?
For low-pressure plumbing, yes. However, for critical high-pressure flanges, this is forbidden. Dedicated stud bolts must be made of specific alloys (like B7) and are chamfered for precise nut engagement.