Hex Bolts
What are Hex Bolts
Hex bolts are six-sided, externally threaded fasteners designed for assembly with a nut or tapped hole. Known for their superior clamping strength and versatility, hex bolts are widely used in structural assemblies, machinery, automotive applications, and heavy equipment. They are available in various grades, materials, and finishes to suit diverse engineering requirements and environmental conditions.
With their hexagonal head design, hex bolts offer easy wrenching and torque transmission, making them a staple component in virtually every industrial and construction setup.
Key Features
- Six-Sided Head – Easy to grip with standard tools for high-torque tightening.
- Versatile Application – Ideal for structural joints, engine assemblies, and equipment installation.
- Material Variety – Manufactured in carbon steel, alloy steel, and stainless steel.
- Threaded for Strength – Offers excellent engagement with compatible nuts and tapped holes.
- Available in Custom Sizes – Lengths, diameters, and thread types as per requirement.
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Specification |
|---|---|
| Size Range | M5 to M72 |
| Thread Types | Metric, UNC, UNF, BSW, BSF |
| Manufacturing Methods | Cold Forged, Hot Forged, CNC Machined |
| Material Options | Carbon Steel, Alloy Steel, Stainless Steel |
| Standards | DIN 933, ISO 4014, ASTM A307, BS 1083 |
| Finishes Available | Zinc Plated, Hot-Dip Galvanized, Black Oxide, Phosphate |
| Property | Value |
|---|---|
| Tensile Strength | 400 – 1200 MPa (grade-dependent) |
| Proof Load | 300 – 1000 MPa |
| Hardness | 100 – 320 HB |
| Elongation | 12% – 25% |
| Temp. Range | -50°C to 300°C |
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.45 – 0.55 |
| Manganese (Mn) | 0.60 – 0.90 |
| Silicon (Si) | 0.10 – 0.35 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.050 |
| Iron (Fe) | Balance |
| Standard | Equivalent Grade |
|---|---|
| ASTM | A307, A325, A490 |
| DIN | 933 |
| ISO | 4014 |
| JIS | B1180 |
| BS | 1083 |
| Bolt Size (mm) | Thread Pitch (mm) | Length (mm) | Approx. Weight (kg/100 pcs) |
|---|---|---|---|
| M8 | 1.25 | 30 | 1.75 |
| M10 | 1.5 | 50 | 3.80 |
| M12 | 1.75 | 75 | 6.50 |
| M16 | 2.0 | 100 | 13.80 |
| M20 | 2.5 | 120 | 24.50 |
Applications of Hex Bolts
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What are hex bolts used for?
Hex bolts are used in a wide range of applications like construction, machine parts, and automotive assemblies, providing high-strength fastening with nuts or tapped holes.
Do you offer high-tensile hex bolts?
Yes, we offer hex bolts in high-tensile grades like 8.8, 10.9, and 12.9, suitable for heavy-duty applications.
Why are hex bolts commonly used in industrial setups?
Their strong grip and easy installation make hex bolts ideal for high-strength, secure fittings across industries.
Not sure which hex bolt fits your needs?
Just share your application details—our team will help you pick the right size, material, and thread type.
