Hex Head Bolt
Hex Head Bolts are among the most commonly used fasteners across various industries due to their high strength, durability, and secure fastening ability. Featuring a six-sided head, these bolts provide superior torque resistance, allowing easy installation and removal using standard wrenches or socket tools..
Manufactured in compliance with ISO, DIN, ASME, and IS standards, these bolts are built to withstand heavy loads, high-pressure environments, and extreme conditions, making them ideal for construction, automotive, machinery, oil & gas, and structural applications.
Sizes & Standards
| Size Range | Standards |
|---|---|
| Diameters: M1.6 to M100 (Metric) | ISO 4014, ISO 4017 – International standards for fully and partially threaded hex bolts |
| Diameters: 1/4" to 1-1/2" (Imperial) | ASME B18.2.1 – American standard defining dimensions & tolerances for hex bolts |
| Lengths: Variable | DIN 933, DIN 931 – German standards for fully and partially threaded hex bolts |
| IS 1364 – Indian standard for high-strength hex bolts | |
| DIN 6921 – Hexagon Flange Bolts with an integrated washer for vibration resistance | |
| DIN 7500 D – Hexagon Head Thread Forming Screws for efficient assembly | |
| DIN 571 – Hexagon Head Lag Screws for wood fastening | |
| Fine Thread Hexagon Head Screws – Suitable for high tensile applications | |
| Heavy Hexagon Structural Bolts (M12-M30) – Designed for steel-to-steel connections | |
| Hexagon Flange Lock Bolts – Ensures secure fastening, preventing loosening |
Key Features & Benefits
High Tensile Strength (✓)
Manufactured from carbon steel, stainless steel, and alloy steel for superior load-bearing capacity.
Corrosion & Rust Resistance (✓)
Available in plain, zinc-plated, hot-dip galvanized (HDG), black oxide, and PTFE coatings.
Precision Threading ✔
Ensures seamless fitment with nuts and mating parts, reducing wear and loosening under vibration.
Versatile Applications ✔
Used across construction, automotive, oil & gas, heavy machinery, and general engineering sectors.
Custom Manufacturing Available ✔
Tailored to specific grade, coating, length, and threading requirements.
Material & Strength Grades
| Material Type | Available Strength Grades | Industry Standards |
|---|---|---|
| Mild Steel & Carbon Steel | 4.6, 5.6, 8.8, 10.9, 12.9 | ISO 898-1, IS 1364, DIN 933, DIN 931 |
| Stainless Steel (Corrosion Resistant) | A2-50, A2-70, A4-70, A4-80 (SS 304, SS 316) | ISO 3506, DIN 933, DIN 931, ASME B18.2.1 |
| High-Tensile Steel | Class 8.8, 10.9, 12.9 | ASTM A193 B7 / B7M, ISO 898-1, IS 1364 |
| Alloy Steel (Heat Treated) | Class 10.9, 12.9 | ISO 898-1, ASTM A325, A490 |
Sizes & Standards
| Size Range | Standards |
|---|---|
| Diameters: M1.6 to M100 (Metric) | ISO 4014, ISO 4017 – International standards for fully and partially threaded hex bolts |
| Diameters: 1/4" to 1-1/2" (Imperial) | ASME B18.2.1 – American standard defining dimensions & tolerances for hex bolts |
| Lengths: Variable | DIN 933, DIN 931 – German standards for fully and partially threaded hex bolts |
| IS 1364 – Indian standard for high-strength hex bolts | |
| DIN 6921 – Hexagon Flange Bolts with an integrated washer for vibration resistance | |
| DIN 7500 D – Hexagon Head Thread Forming Screws for efficient assembly | |
| DIN 571 – Hexagon Head Lag Screws for wood fastening | |
| Fine Thread Hexagon Head Screws – Suitable for high tensile applications | |
| Heavy Hexagon Structural Bolts (M12-M30) – Designed for steel-to-steel connections | |
| Hexagon Flange Lock Bolts – Ensures secure fastening, preventing loosening |
Common Applications of Hex Head Bolts
Construction & Structural Engineering
Used in steel frameworks, bridges, and high-rise buildings.
Automotive & Heavy Vehicles
Essential for chassis assembly, suspension systems, and engine components.
Oil & Gas Industry
Resistant to high-pressure, high-temperature, and corrosive environments.
Machinery & Equipment Manufacturing
Secures vital components in power plants, mining, and industrial machinery.
Railway & Aerospace
Used in rail tracks, metro projects, and aerospace applications.
Surface Coating & Plating Options
| Coating Type | Benefits | Recommended Applications |
|---|---|---|
| Plain/Oiled Finish | Basic protection against oxidation | Indoor applications |
| Zinc Plated (White/Blue/Yellow) | Corrosion-resistant for general use | ISO 3506, DIN 933, DIN 931, ASME B18.2.1 |
| Hot-Dip Galvanized (HDG) | Superior rust resistance for harsh environments | Outdoor, marine, and construction |
| Black Oxide Coating | Mild corrosion resistance with a sleek look | Machinery, automotive |
| PTFE & Geomet Coatings | Chemical and weather resistance | High-performance industrial uses |
Why Choose Rajal Industries for Hex Head Bolts?
Manufactured to International Standards
Ensuring dimensional accuracy, strength, and longevity.
Bulk & Custom Orders Available
Flexible manufacturing to meet your exact specifications.
High-Quality Material Selection
Ensuring long-lasting durability and reliability.
Stringent Quality Control
Each bolt undergoes tensile testing, hardness testing, and thread fitment checks.
Competitive Pricing & Timely Delivery
Efficient production and supply chain management.
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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