T-Bolts
T-Bolts, also known as T-Slot Bolts or Tee Head Bolts, are versatile fasteners designed to fit into T-slots, tracks, and channel rails, allowing for quick positioning, secure fastening, and adjustable assembly. They are widely used in machine tool setups, modular workstations, aluminum profile structures, and industrial automation systems.
At Rajal Industries, we manufacture precision-engineered T-Bolts that conform to DIN standards and general bolt specifications, ensuring high tensile strength, precise fitment, and long-lasting performance.
Sizes & Standards
| Size Range | Standards |
|---|---|
| Head Widths: 6mm to 20mm (Metric) | ISO 6474 – Standard for lifting and load-bearing eye boltsDIN 186 – German standard for T-slot bolts used in machine tables |
| Head Widths: 1/4" to 3/4" (Imperial) | DIN 7992 – T-head bolts for industrial and construction applications |
| Diameters: Vary by application | General Bolt Standards – Suitable for different rail profiles and slot sizes |
Material & Strength Grades
| Material Type | Available Strength Grades | Industry Standards |
|---|---|---|
| Mild Steel & Carbon Steel | 4.6, 5.6, 8.8 | DIN 186, DIN 7992 |
| Stainless Steel (Corrosion Resistant) | A2-70 (SS 304), A4-80 (SS 316) | ISO 3506, DIN 7992 |
| Alloy Steel (Heat Treated) | Class 8.8, 10.9, 12.9 | ISO 898-1, DIN 186 |
- Heat-Treated for Maximum Strength –Huck bolts undergo quenching and tempering to improve fatigue resistance and tensile strength
- Load Ratings Based on Material & Application::
- DIN 186 T-Bolts in Class 8.8 : 800-900 MPa tensile strength
- Stainless Steel A4-80 T-Bolts : 700-800 MPa corrosion-resistant strength
Head & Slot Design Specifications
T-Head Design for Secure Slot Engagement
- The flat, rectangular head design prevents rotation within the slot, ensuring firm and adjustable clamping.
- Designed for quick installation and re-positioning in industrial and construction setups.
Precision Machined for High Load Distribution
- Available in different slot widths, depths, and thread configurations to match various industrial profiles.
- Compatible with aluminum extrusion systems, track rails, and machine bed clamping setups.
Threaded & Unthreaded Variants for Different Applications
- Fully Threaded T-Bolts – Allow full adjustability and high torque applications.
- Partially Threaded T-Bolts – Provide better load absorption and clamping force.
Thread Specifications & Precision Engineering
| Thread Type | Description | Application |
|---|---|---|
| Coarse Thread (UNC/ISO Metric) | Provides high durability and easy installation | General lifting, anchoring, rigging |
| Fine Thread (UNF/Metric Fine) | Offers higher tensile strength & load control | Precision lifting, seismic applications |
| Fully Threaded Eye Bolts | Allows maximum engagement with nuts | Adjustable load-bearing connections |
| Partially Threaded Eye Bolts | Provides higher shear strength & rotational stability | Machinery lifting, industrial mounting |
- Structural Engineering & Bridges – Used in steel-to-steel connections, frameworks, and high-load joints.
- Heavy Machinery & Industrial Equipment – Essential for gear assemblies, compressors, mining equipment, and turbines.
- Automotive & Aerospace – Provides secure fastening in engines, suspensions, and aircraft components.
- Railway & Metro Projects – Used in rail track fastening, metro rail, and locomotive assemblies.
- Power Plants & Renewable Energy – Fastens wind turbines, transmission towers, and heavy infrastructure.
Thread Fitment & Compliance
- Metric threads conform to ISO 6g tolerances, ensuring secure engagement with nuts and slots.
- Imperial T-Bolts comply with DIN 186 & DIN 7992, ensuring structural reliability.
Corrosion Resistance & Environmental Suitability
T-Bolts are used in high-vibration, dynamic loading, and outdoor environments, requiring protective coatings for extended service life.
| Coating Type | Corrosion Protection Level | Ideal Applications |
|---|---|---|
| Plain Steel (No Coating) | Low | Indoor applications |
| Zinc Plated (Yellow/Blue/White/Black) | Moderate (48-96 hours SST) | General industrial, mechanical setups |
| Hot-Dip Galvanized (HDG) | High (600+ hours SST) | Outdoor, rail tracks, high-humidity environments |
| Dacromet/Geomet Coating | Extreme (1000+ hours SST) | Aerospace, offshore, and marine applications |
Salt Spray Testing (SST) per ASTM B117 & ISO 9227 ensures long-term corrosion resistance
Common Applications of T-Bolts
- Machine Tool Clamping & Fixturing – Used in CNC setups, T-slot tables, and modular fixtures.
- Aluminum Profile & Extrusion Fastening – Secures brackets, linear rails, and motion systems.
- Rail Track & Conveyor Systems – Ensures adjustable, high-strength fastening in dynamic environments.
- Heavy Equipment & Construction Structures – Used in crane rail fixings, metal framework assembly, and steel constructions.
- Renewable Energy & Solar Panel Mounting – Provides secure attachment in solar panel frameworks and wind turbines.
Why Choose Rajal Industries for T-Bolts?
Manufactured to International Standards
Ensuring precision engineering, strength, and reliability.
Customizable Designs
Available in different head widths, slot compatibility, and coatings.
Bulk & Custom Orders
Flexible manufacturing for industrial and modular applications.
Durability & Corrosion Resistance
Engineered with high-strength materials and protective coatings.
Stringent Quality Control
T-Bolts undergo load testing, impact resistance verification, and corrosion testing.
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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