Threaded Rods
Threaded Rods, also known as threaded bars or stud bolts, are long, cylindrical fasteners with external threading along their entire length or at both ends. These rods are widely used in construction, infrastructure, mechanical assembly, and heavy machinery, providing high-strength, adjustable fastening for various industrial applications.
At Rajal Industries, we manufacture precision-engineered Threaded Rods conforming to ISO, ASTM, and DIN standards, ensuring superior tensile strength, corrosion resistance, and reliable load-bearing performance.
Sizes & Standards
| Size Range | Standards |
|---|---|
| Metric: M3 to M36 | ISO 898-1 – Standard for high-tensile threaded rods |
| Imperial: 1/4" to 1-1/2" | ASTM A307 – Standard for carbon steel threaded rods |
| DIN 975 – German standard for fully threaded rods | |
| DIN 976 – Standard for double-ended studs | |
| ISO 898-1 – International standard for mechanical properties of threaded rods |
Material & Strength Grades
| Material Type | Available Strength Grades | Industry Standards |
|---|---|---|
| Carbon Steel & Mild Steel | Class 4.8, 5.8, 8.8, 10.9, 12.9 | ISO 898-1, ASTM A307, DIN 975 |
| Stainless Steel (Corrosion Resistant) | A2-70 (SS 304), A4-80 (SS 316) | ISO 3506 |
| High-Tensile Alloy Steel | Class 8.8, 10.9, 12.9 | ISO 898-1, DIN 976 |
- Heat-Treated for Maximum Strength –Threaded rods undergo quenching and tempering for enhanced tensile strength, durability, and impact resistance.
- Load Ratings Based on Material & Application:
- Carbon Steel Class 8.8 Threaded Rod: 800-900 MPa tensile strength
- Stainless Steel A4-80 Threaded Rod: 700-800 MPa corrosion-resistant strength
Threaded Rod Design & Engineering Features
Fully Threaded vs. Double-Ended Designs for Versatile Applications
- Fully Threaded Rods (DIN 975, ISO 898-1) – Provide continuous threading along the entire length, allowing full adjustability and easy cutting to custom sizes.
Double-Ended Threaded Studs (DIN 976) – Have threads at both ends, ensuring secure fastening with nuts or tapped components.
Precision Threading for Secure Fastening
- Available in coarse and fine thread options to suit various load-bearing and alignment needs.
Threads are cold-rolled or cut to ensure maximum engagement and durability.
Enhanced Load Distribution & High Torque Resistance
- Ensures secure load transfer in structural, mechanical, and anchoring applications.
Reduces stress concentration on bolted connections for long-term reliability.
Compatible with Various Fastening Systems
- Hex Nuts, Flange Nuts, Lock Nuts, and Structural Washers – Provide secure and stable bolted connections.
Anchoring Systems – Used in concrete reinforcement, foundation bolting, and seismic-resistant applications.
Thread Specifications & Precision Engineering
| Thread Type | Description | Application |
|---|---|---|
| Coarse Thread (UNC/Metric) | Ensures fast engagement and high load resistance | Structural, construction, general fastening |
| Fine Thread (UNF/Metric Fine) | Provides higher tensile strength & precise load transfer | Aerospace, machinery, transportation |
| Fully Threaded Rods | Allows maximum adjustability and secure fastening | HVAC, pipeline supports, scaffolding |
| Double-Ended Threaded Rods | Offers better clamping force & long-term stability | Foundation anchoring, mechanical assembly |
Thread Fitment & Compliance
- Metric threads conform to ISO 6g tolerances, ensuring tight engagement and torque control.
- Imperial threaded rods meet ASTM A307, DIN 975, and ISO 898-1 for industrial and structural applications.
Common Applications of Threaded Rods
- Construction & Infrastructure – Used in steel structures, concrete reinforcement, and seismic retrofitting.
- Heavy Machinery & Equipment – Provides secure fastening in industrial machines, conveyors, and processing plants.
- Oil & Gas & Power Plants – Ensures high-load bolted connections in pipelines, refineries, and offshore rigs.
- Railway & Aerospace Engineering – Used in train suspension systems, aircraft frames, and transport infrastructure.
- HVAC & Plumbing – Supports ventilation ducts, pipe clamps, and mechanical installations.
Why Choose Rajal Industries for Threaded Rods?
Manufactured to International Standards
Ensuring precision engineering, strength, and compliance.
High-Strength & Load-Bearing Capacity
Designed for structural, mechanical, and anchoring applications.
Customizable Variants Available
Offering fully threaded, double-ended, coarse and fine-threaded rods.
Bulk & Custom Orders
Ideal for construction, automotive, and industrial applications.
Stringent Quality Control
Each batch undergoes torque testing, thread fitment verification, and tensile strength analysis.
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Our Offices
C-204, Vaibhav Platina, Nr. Kaveri Trishra, S P Ring road, Shilaj, Ahmedabad, Gujarat-380054
Call us
+91-846 036 2030
Email Us
rajalfast@gmail.com sales@rajalindustries.com