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Mira Fasteners is a reliable manufacturer and supplier of *High Tensile Grade 8.8 Bolts* based in Kuala Lumpur, Malaysia, providing top-notch fastening solutions to industries around the globe. These bolts are celebrated for their exceptional strength, precise engineering, and long-lasting durability. Crafted with cutting-edge technology and rigorous quality control, they’re built to excel in high-stress situations. The High Tensile Grade 8.8 Bolts from Mira Fasteners meet international standards, ensuring they’re both dependable and safe. With a strong focus on customer satisfaction, the company addresses a variety of industrial needs, offering prompt delivery and competitive pricing without skimping on quality.
*High Tensile Grade 8.8 Bolts* are primarily constructed from medium carbon steel, which usually contains 0.40–0.50% carbon, 0.60–0.90% manganese, along with trace amounts of phosphorus and sulfur. They undergo a quenching and tempering process to boost their hardness and tensile strength. These bolts boast a minimum tensile strength of 800 MPa and a yield strength of 640 MPa, making them highly resistant to shearing and fatigue. With a hardness rating between 22–34 HRC and impressive wear resistance, they deliver reliable performance under heavy loads, making them perfect for demanding fastening tasks in tough environments.
| 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 | |||||||
| 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 |
| 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 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Grade 8.8 bolts are widely used in high-pressure applications requiring strength and stability. They are commonly used in the construction engineering industry, creating critical components in bridges, buildings and heavy construction projects. In the automotive industry, these screws are used in engine assemblies and chassis suspension systems to provide reliable fastening under harsh conditions, in addition to being used in industrial equipment to ensure that tight connections are made with equipment under heavy loads and vibration. Compliance with international standards and exceptional performance make them desirable for complex engineering and design applications.
*High Tensile Grade 8.8 Bolts* find their place in a variety of industries thanks to their outstanding strength and reliability. They’re commonly used in construction, automotive manufacturing, heavy machinery assembly, and infrastructure projects. In the automotive field, you’ll find them in engine components, chassis, and suspension systems. In construction, they play a crucial role in securing steel structures, bridges, and skyscrapers. These bolts are also ideal for mining equipment, wind turbines, and industrial plants where high load-bearing capacity and resistance to vibrations are key. Their versatility and durability make them essential for both static and dynamic load applications.
Mira Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kuala lumpur, Malaysia, with over 8 years of experience serving global industries.
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