High Tensile Grade 8.8 Bolts Manufacturer and Supplier in Dubai, UAE
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Majid Fasteners is a leading manufacturer and supplier of high-quality High Tensile Grade 8.8 Bolts in Dubai, UAE, known for delivering reliable fastening solutions for demanding industrial applications. With a strong commitment to precision engineering, durability, and international standards, the company offers a comprehensive range of bolts designed to withstand heavy loads and harsh environments. Majid Fasteners serves diverse sectors such as construction, oil and gas, automotive, and manufacturing, ensuring consistent performance and safety. Supported by advanced technology, skilled professionals, and prompt delivery, the company continues to be a trusted partner for businesses seeking superior fastening products in the UAE and beyond.
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What is High Tensile Grade 8.8 Bolt
High Tensile Grade 8.8 Bolts are engineered from medium carbon steel, typically containing 0.35–0.45% carbon and treated through quenching and tempering to enhance strength and durability. These bolts exhibit excellent mechanical properties, including a minimum tensile strength of 800 MPa and yield strength of 640 MPa, ensuring exceptional load-bearing performance. Known for their hardness, toughness, and resistance to wear, Grade 8.8 bolts are ideal for heavy-duty structural applications, machinery, and industrial assemblies requiring reliable fastening under high stress.
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Grade 8.8 Bolts Specifications
| Grade 8.8 Bolts Grades | Grade 8.8 |
| En 15048 Grade 8.8 Size | Dia M 20 to 100 mm Inch 3/4“ to 3.1/2“ |
| 8.8 High Tensile Bolts Standard | ASTM A324, ASME SA324 |
| Grade 8.8 Fasteners finish | Zinc plated / Plain / Hot dip galvanised |
Grade 8.8 Bolts Chemical Composition
| Bolts Grade | Material and heat treatment | Chemical composition (analysis on the product) % | °C Min hardening temperature | ||||
| C | P | S | B | ||||
| minimum | max | max | max | max | |||
| 8.8 | Alloy/ Carbon steel (B, Mn, Cr), quenched and tempered | 0,15(3) | 0,40 | 0,025 | 0,025 | 0,003 | 425 |
| Quenched and tempered carbon steel Bolts | 0,25 | 0,55 | 0,025 | 0,025 | |||
| Quenched and tempered alloy steel Bolts | |||||||
Grade 8.8 Bolts Mechanical Properties
| Grades | Size Range | PS [MPa] | YS (min) [MPa] | TS (min) [MPa] | Hardness [Rockwell] |
|---|---|---|---|---|---|
| Class 8.8 | Under M16 | 580 | 640 | 800 | |
| 17-72 | 600 | 660 | 830 | C23–34 |
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High Tensile Grade 8.8 Bolt Types
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High Tensile Grade 8.8 Bolt Uses
High Tensile Grade 8.8 Bolts are widely used in industries requiring strong, reliable, and durable fastening solutions. They are essential in structural steel construction, securing beams, columns, and heavy frameworks. In automotive and machinery manufacturing, these bolts provide dependable joints for engines, gear assemblies, and mechanical components. They are also used in infrastructure projects such as bridges, railways, and highways due to their high load-bearing capacity. Additionally, Grade 8.8 bolts are preferred in oil and gas, power plants, and industrial equipment where resistance to stress, vibration, and dynamic loads is critical for long-term performance and safety.
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