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Yasin Fasteners, based in Istanbul, Turkey, creates High Tensile Grade 8.8 bolts, designed for strength, versatility, and reliability. As a reliable supplier, Yasin Fasteners guarantees that every Grade 8.8 bolt meets international standards through strict quality control. Made from medium carbon steel, these bolts are quenched and tempered to improve mechanical performance. Their strength and durability make them suitable for general engineering, automotive, and construction applications. Yasin Fasteners delivers Grade 8.8 bolts worldwide, providing fastening solutions that combine affordability, strength, and versatility for industries requiring consistent performance and structural integrity under load.
Grade 8.8 bolts come from medium carbon steel with manganese and sometimes boron for better hardenability. They undergo heat treatment processes, including quenching and tempering. These bolts achieve tensile strength of 830 MPa and yield strength of 640 MPa, with hardness ranging from 22 to 34 HRC. They show good ductility, toughness, and fatigue resistance, making them apt for both static and dynamic applications. Their balanced composition and mechanical properties make them among the most widely used high-tensile bolts in industrial and construction sectors globally.
| 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 from Yasin Fasteners are often used in automotive assemblies, structural steel construction, and heavy machinery. They are extensively used in bridges, building frameworks, and railway equipment due to their load-bearing capability. Manufacturing industries rely on them in equipment assemblies and maintenance where durability is crucial. They also feature in agricultural machinery, mining gear, and infrastructure projects that need dependable fasteners. With their balance of strength, toughness, and cost-effectiveness, Grade 8.8 bolts are a flexible solution for industries seeking reliable fastening in various applications.
Yasin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Istanbul, Turkey, with over 8 years of experience serving global industries.
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