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The Grade 8.8 bolts from Poang Fasteners are known for their extreme strength and durability. Our bolts are made of premium materials and conform to ASTM, ASME, ISO, DIN, BS, EN, SAE, and Indian Standards. Available in ASME, DIN, ISO, BS, UNI, CSN, PN, EU, and IFI specifications, they are designed to ensure quality and performance in any application. These bolts provide excellent performance and reliability in a variety of applications which require more and make construction, heavy machinery and engineering jobs ideal.
Grade 8.8 bolts are made of medium carbon steel, usually alloyed with manganese, boron and chromium. They have a high tensile strength of at least 800 MPa and yield strength of 640 MPa, which provide excellent mechanical properties. Bolts are heat-treated for extra strength and durability. Benefits include excellent strength, resistance to fatigue and fatigue, and reliability in high-stress situations. These bolts are ideal for heavy construction and automotive and industrial machinery, providing a durable and safe fastening solution that meets international standards.
| 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.
Our grade 8.8 bolts are carefully loaded to prevent damage during transport. Wooden boxes or sturdy boxes that meet international standards are used. Each bolt is marked with the trademark, grade, size and lot number. We offer EN 10204-3.1 and EN 10204-3.2 certificates, product certificates, NABL-approved laboratory test reports, and professional test certificates. In addition, 100% of radiographic and third-party inspection reports are provided to ensure quality control and compliance.
Poang Fasteners is a leading manufacturer and supplier of high-quality fasteners in Da Nang, Vietnam, with over 8 years of experience serving global industries.
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