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Mazin Fasteners is a reputable manufacturer and supplier of High Tensile Grade 9.8 Bolts, proudly based in Muscat, Oman. They specialize in providing dependable fastening solutions for both structural and industrial needs. The company emphasizes precision in manufacturing, rigorous quality control, and adherence to international standards like ISO and DIN. With state-of-the-art production facilities and a team of skilled experts, Mazin Fasteners ensures that their bolts deliver exceptional strength, durability, and consistent performance. Their dedication to material traceability, competitive pricing, and prompt delivery makes them a go-to partner for the construction, engineering, and heavy machinery sectors.
High Tensile Grade 9.8 Bolts are crafted from medium carbon or alloy steel and undergo heat treatment through quenching and tempering to achieve outstanding strength. These bolts generally boast a minimum tensile strength of about 900 MPa, with a yield strength roughly 0.8 times that value. They are known for their high hardness, impressive load-bearing capacity, and solid fatigue resistance. Thanks to their carefully controlled mechanical properties, these bolts maintain dimensional stability, resist deformation, and provide reliable clamping force even under heavy loads and dynamic conditions.
| Strength class | Material and heat treatment | Chemical composition (analysis on the product) % | Minimum hardening temperature °C | ||||
|---|---|---|---|---|---|---|---|
| C | P | S | B | ||||
| min | max | max | max | max | |||
| Grade 9.8 | Carbon or alloy steel (B, Mn, Cr), quenched and tempered | 0,15 | 0,40 | 0,025 | 0,025 | 0.003 | 425 |
| Markings & Mechanical Prperties | ||||||
|---|---|---|---|---|---|---|
| Grades | Markings | Size Range | PS [MPa] | YS (min) [MPa] | TS (min) [MPa] | Hardness [Rockwell] |
| Class 9.8 |  | 1.6–16 | 650 | 720 | 900 | C27–36 |
| 9.8 Grade Fasteners Sizes | M2-M100 (Cold/ Hot forged) |
| Grade 9.8 Bolt Length | 3 mm to 200 mm |
| Class 9.8 Bolts Size Metric |
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| Grade 9.8 Hex Bolts Size Inch |
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| Standard | Manufacturer of Grade 9.8 Bolt as per IS, ANSI, ASTM, DIN, ISO, JIS, GB, ASME, BS, UNI, CSN, EU, IFI, PN, and all International Standards
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| Grade 9.8 Steel Bolts & Screws US Threads | Unified national fine (UNF), UNJC, UNJF, Unified National Coarse (UNC), Constant-pitch threads, METRIC, BSF, UNR, BSW, Unified national extra fine (UNEF), UNK |
| Grade 9.8 Bolts Head drive | Phillips/Slot, Phillips, Slotted, Six-Lobe, etc |
| Material Origin | Grade 9.8 Bolt are Western European. Eastern origin possible on request. |
| Grade 9.8 Nut Bolt Surface Finish & Coating |
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| BS 3692 grade 9.8 Fasteners types | Hex Domed Cap Nuts, Stud Bolts, Foundation Bolts, Hex Coupling Nut, Pan Head Screw, T-Head Bolts, Eye Bolt, Socket Screw, Bolts, Machine Screw, J Bolts, Washers, Socket Head Cap Screw, Anchors, Marine Anchors, Structural Bolts, Square Nut, Hex Set Screw, Allen Cap screw, Nut, Socket Hexagon Head Screw, U Bolts, Studs, Anchor Bolt, Screw, Spring Washers, Hex Head Bolts, Sockets, Nuts, Wing Screw, Cap Screw, Studs, Hex Nut, Hexagon Nut, Mushroom Head Square Neck Bolts, Wing Screw, Screws |
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.
High Tensile Grade 9.8 Bolts find their place in a variety of applications that demand strong and secure fastening under significant stress. You’ll often see them in structural steel connections, construction frameworks, heavy machinery, automotive assemblies, industrial equipment, and large infrastructure projects. They are also widely utilized in power plants, material handling systems, and engineering structures that experience vibration and mechanical loads. These bolts are designed to perform reliably in challenging environments where strength and safety are paramount. Their perfect blend of strength, toughness, and durability makes Grade 9.8 bolts an excellent choice for demanding applications.
Our grade 9.8 bolts are carefully loaded to prevent damage during transport. We use sturdy wooden boxes or crates that meet international standards. Each bolt is marked with the company logo, grade, size and lot number. We offer EN 10204-3.1 and EN 10204-3.2 certificates, material certificates, NABL-approved laboratory test reports, and professional test certificates. In addition, we provide 100% radiographic and third-party inspection reports to ensure strict quality control and regulatory compliance. This ensures that our bolts meet the highest safety and performance standards.
Mazin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Muscat, OMAN, with over 8 years of experience serving global industries.
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