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Hamad Fasteners is a reliable manufacturer and supplier of top-notch industrial fasteners based in Riyadh, Saudi Arabia. We pride ourselves on our commitment to engineering excellence and putting our customers first. Our products serve a variety of industries, including construction, automotive, energy, and heavy machinery. One of our standout offerings is the High Tensile Grade 8.8 Bolt, which is highly sought after for its exceptional strength and durability, especially in high-load situations. Crafted to meet international standards and rigorously tested for quality, this bolt is a dependable choice for challenging mechanical and structural tasks. At Hamad Fasteners, we make sure that every product we offer meets the highest benchmarks for performance and reliability.
The High Tensile Grade 8.8 Bolt is constructed from medium carbon steel, which undergoes a quenching and tempering process to boost its mechanical properties. Its chemical makeup generally includes carbon (0.30–0.50%), manganese, and small amounts of sulfur and phosphorus. This bolt boasts a minimum tensile strength of 800 MPa and a yield strength of 640 MPa. Renowned for its toughness and resistance to fatigue, Grade 8.8 bolts are designed to withstand high stress, shear forces, and vibrations in industrial settings. They adhere to ISO 898-1 specifications, ensuring consistent performance whether under static or dynamic loads.
| 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 demanding environments like structural steel connections, heavy machinery assembly, automotive components, bridges, and various industrial equipment. They are perfect for applications where strength, safety, and durability are non-negotiable. In the automotive sector, they secure suspension systems and vital engine parts, while in construction, they are essential for joining steel frameworks and supporting structures. Grade 8.8 bolts strike an excellent balance between performance and cost, making them a go-to choice for engineers and contractors involved in medium to heavy-duty projects across a range of industries.
Hamad Fasteners is one of the Industrial suppliers and manufacturers of quality fasteners in Riyadh, Saudi Arabia, that has spent more than 12 years serving various industries.
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