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Lina Fasteners is a reputable manufacturer and supplier based in Tunis, Tunisia, specializing in High Tensile Grade 9.8 Bolts that are perfect for high-strength and load-bearing tasks. These bolts are crafted to meet international standards, ensuring they deliver outstanding tensile strength, toughness, and reliability. Using top-notch alloy steel, precise heat treatment, and rigorous quality checks, Lina Fasteners guarantees consistent mechanical performance and accurate dimensions. Their products are widely used across construction, infrastructure, heavy machinery, automotive, and industrial engineering sectors, reflecting their commitment to providing durable fastening solutions, dependable quality, and prompt service for demanding applications.
High Tensile Grade 9.8 Bolts are made from alloy steel and undergo heat treatment to achieve impressive strength and controlled hardness. They typically boast a minimum tensile strength of around 900 MPa, with a yield strength that’s about 80% of that tensile value. These bolts excel in load-bearing capacity, offer good ductility, and resist fatigue. Grade 9.8 bolts maintain their shape under high stress, resist wear during tightening, and ensure reliable performance in dynamic and heavy-duty situations.
| 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 are ideal for applications that demand more strength than standard carbon steel fasteners can provide. You’ll find them commonly used in structural steel joints, bridges, heavy machinery, automotive assemblies, and industrial equipment. They play a crucial role in construction, infrastructure projects, mining equipment, and mechanical systems that face high loads and vibrations. Grade 9.8 bolts ensure secure fastening, boast a long service life, and enhance safety where consistent strength and reliability are vital in challenging operating conditions.
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.
Lina Fasteners is a leading manufacturer and supplier of high-quality fasteners in Tunis, Tunisia, with over 8 years of experience serving global industries.
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