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Punit Fasteners, located in Delhi, India, has earned a solid reputation as a reliable manufacturer and supplier of High Tensile Grade 9.8 bolts. These bolts are designed for exceptional strength and dependability, making them perfect for tough industrial and structural tasks. Crafted with cutting-edge manufacturing methods and rigorous quality checks, they meet international performance standards. Punit Fasteners’ Grade 9.8 bolts are particularly recognized for their impressive tensile strength and resistance to fatigue, finding their way into various sectors such as automotive, construction, heavy machinery, and infrastructure. With a commitment to durability, safety, and precision, the company provides fastening solutions that can handle high-stress, high-load, and high-impact situations.
These High Tensile Grade 9.8 bolts are made from medium carbon alloy steel and undergo heat treatment through quenching and tempering, enhancing their mechanical strength and hardness. They boast a minimum tensile strength of 900 MPa and a yield strength of 720 MPa, ensuring they perform well under both dynamic and static loads. Additionally, these bolts are known for their good ductility, wear resistance, and fatigue strength. Typically coated to resist corrosion, they are perfect for applications where strength, reliability, and structural integrity are paramount, delivering consistent performance even under tension, vibration, and heavy mechanical stresses.
| 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.
In various applications that require superior mechanical strength and durability, High Tensile Grade 9.8 bolts are indispensable. In the automotive sector, they are used in engine blocks, gearboxes, suspensions, and chassis systems. In construction, they play a crucial role in securing steel structures, bridges, and pre-fabricated buildings. These bolts are also vital in heavy machinery, cranes, mining equipment, and railway infrastructure, where reliable load-bearing capacity is essential. Their ability to resist fatigue and vibration makes them ideal for dynamic environments, ensuring safety and long-lasting reliability in critical, high-load engineering 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.
Punit Fasteners is a leading manufacturer and supplier of high-quality fasteners in Delhi, India, with over 15 years of experience serving global industries.
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