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Yasin Fasteners, based in Istanbul, Turkey, makes and supplies High Tensile Grade 9.8 bolts designed for industries that need superior strength and reliability. These bolts are heat-treated alloy steel fasteners that deliver high performance under stress. By strictly following international standards, Yasin Fasteners ensures every bolt meets the required mechanical and dimensional specifications. Grade 9.8 bolts offer a great blend of tensile strength, hardness, and toughness, making them suitable for medium to heavy-duty applications. They are commonly used in automotive, heavy machinery, construction, and power generation sectors, providing safe, durable, and reliable fastening solutions.
Grade 9.8 bolts are made from alloy steel that includes elements like carbon, manganese, and chromium. They are quenched and tempered to gain better mechanical strength. With a tensile strength of 940 MPa, yield strength of 830 MPa, and hardness of 31 to 36 HRC, these bolts provide excellent wear resistance and toughness. Their strong fatigue resistance allows reliable performance under repeated stress cycles. The combination of strength, ductility, and durability ensures secure fastening in applications with high load-bearing demands and mechanical stability.
| 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.
Grade 9.8 bolts are widely used in high stresses due to their exceptional strength and durability. They are essential in the construction industry, protecting parts of buildings and maintaining their stability. On heavy machinery, these screws withstand high loads and vibration, making them ideal for assembly and maintenance. Industrial applications benefit from reliability in high-pressure environments, including the automotive, aerospace, and aerospace industries. Grade 9.8 bolts are also used in infrastructure projects such as bridges and tunnels, where safety and efficiency are critical to ensure the durability and safety of connections.
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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