Premium M3-M100 Continuous Thread Studs: High-Strength Fastening for Critical Infrastructure
Our M3-M100 Continuous Thread Studs, also widely recognized as All-thread Stud Bolts, are the backbone of high-pressure piping and structural steel connections. Unlike standard bolts, these full-thread studs feature threading along their entire length, allowing for maximum flexibility in flange assemblies and heavy equipment anchoring. Manufactured strictly to ASTM A193 B7 and DIN 976 specifications, our stud bolts are designed to withstand extreme tension, high temperatures, and corrosive environments.
As a specialized stud bolt factory, we provide an extensive range of high-performance materials, including 4140 Alloy Steel for B7 grade requirements and 316 Stainless Steel for offshore and chemical processing facilities.
- Exceptional Load Distribution: Continuous threading ensures uniform engagement with nuts at both ends, providing superior clamping force in high-pressure flange joints.
- High-Temperature Resistance: Our ASTM A193 B7 studs are heat-treated to maintain mechanical properties in temperatures up to 450°C (840°F).
- Precision Rolled Threads: Threads are rolled under high pressure rather than cut, resulting in a stronger molecular structure and improved fatigue resistance.
- Advanced Coatings: We offer PTFE (Teflon) coating in various colors (Blue, Green, Yellow) to reduce friction during assembly and provide 2000+ hours of salt spray protection.
| Thread Size | Pitch (mm) | Tensile Strength (MPa) | Hardness (HRC) |
|---|---|---|---|
| M12 / 1/2″ | 1.75 / 13 TPI | 800+ (Grade B7) | 22 – 32 |
| M16 / 5/8″ | 2.00 / 11 TPI | 800+ (Grade B7) | 22 – 32 |
| M20 / 3/4″ | 2.50 / 10 TPI | 800+ (Grade B7) | 22 – 32 |
| M24 / 1″ | 3.00 / 8 TPI | 800+ (Grade B7) | 22 – 32 |
| M36 / 1-1/2″ | 4.00 / 6 TPI | 800+ (Grade B7) | 22 – 32 |
- Oil & Gas: Securing pipe flanges, valves, and pressure vessels in refineries and offshore platforms.
- Chemical Processing: Using B8M (SS316) studs for resistance against aggressive chemical agents.
- Power Generation: Critical fasteners for steam turbines, heat exchangers, and boiler systems.
- Large-Scale Construction: Anchoring heavy machinery and structural steel beams in skyscraper frameworks.
A: DIN 975 usually refers to a 1-meter or 3-meter threaded rod, while DIN 976 refers to a threaded stud cut to a specific shorter length for assembly.
Q: Why use PTFE (Teflon) coated studs?
A: PTFE coating provides a low-friction surface for easier torqueing and prevents “nut galling” (seizing), which is common in stainless steel and high-alloy fasteners.
Source M3-M100 Continuous Thread Studs from a Professional Factory
Looking for bulk ASTM A193 B7 stud bolts with complete traceability and Mill Test Reports? We support custom lengths and global wholesale. Contact us today for a free quote and technical samples!
