Bolts
What are Bolts?
Bolts are externally threaded fasteners used with nuts (or threaded holes) to create strong, tension-bearing joints. They are used in nearly every mechanical, civil, and structural application where durable, removable connections are needed.
Bolts are manufactured in a wide variety of head styles, sizes, and materials, including carbon steel, alloy steel, and brass. Available with coarse and fine threads, they ensure tight clamping force and ease of disassembly when required.
Key Features
- Threaded Shafts – Provides secure fastening when used with nuts or tapped holes.
- High Tensile Strength – Suitable for load-bearing and dynamic stress environments.
- Head Style Variety – Hex, socket, carriage, and custom heads available.
- Multiple Material Grades – Available in carbon steel, alloy steel, stainless steel, brass, etc.
- Reusable & Durable – Withstands repeated tightening and loosening cycles.
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Specification |
|---|---|
| Size Range | M5 to M100 |
| Thread Types | Metric, UNC, UNF, BSW, BSF |
| Head Styles | Hex, Socket, Countersunk, Square, Round |
| Material Options | Carbon Steel, Alloy Steel, Brass, Stainless Steel |
| Standards | DIN 933, ISO 4017, ASTM A307/A325, BS 3692 |
| Finish Options | Zinc Plated, Hot-Dip Galvanized, Black Oxide |
| Property | Value |
|---|---|
| Tensile Strength | 400 – 1200 MPa |
| Yield Strength | 250 – 950 MPa |
| Hardness | 100 – 350 HB |
| Elongation | 10% – 25% |
| Operating Temperature | -50°C to 500°C |
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.20 – 0.50 |
| Manganese (Mn) | 0.60 – 1.35 |
| 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 / 931 / 912 |
| ISO | 4014 / 4017 / 4762 |
| JIS | B1180 |
| BS | 3692 / 4190 |
| Bolt Size | Thread Pitch (mm) | Weight (kg) |
|---|---|---|
| M6 x 20 mm | 1.0 | 1.50 |
| M8 x 30 mm | 1.25 | 3.00 |
| M10 x 40 mm | 1.5 | 5.20 |
| M12 x 50 mm | 1.75 | 8.80 |
| M16 x 60 mm | 2.0 | 17.00 |
| M20 x 70 mm | 2.5 | 30.50 |
Applications of Bolts
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What types of bolts are best for structural applications?
High-tensile hex bolts, anchor bolts, and heavy hex bolts are commonly used for structural and load-bearing assemblies.
Do you provide bolts with certification and traceability?
Yes, all bolts are supplied with material test certificates (MTCs) and can be inspected by third-party agencies upon request.
Can bolts be customized in terms of thread length and head design?
Absolutely. We manufacture custom bolts based on drawings, including specific head types, thread profiles, and surface treatments.
Do you export bolts globally?
Yes. We export to clients worldwide, offering timely delivery, secure packaging, and complete export documentation.
