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Grade 9.8 bolts from Mukau Fasteners are known for their exceptional strength and durability. Our bolts are made from premium materials and conform to ASTM, ASME, ISO, DIN, BS, EN, SAE, and Indian standards. Available in ASME, DIN, ISO, BS, UNI, CSN, PN, EU, and IFI specifications, these bolts ensure top-notch quality and performance in various applications. Designed for high reliability, their use in construction machines is heavy and mechanical, making them ideal for demanding environments and critical applications.
MUKAU FASTENERS, located in Kinshasa, Congo, is a reliable manufacturer and supplier of top-notch industrial fasteners, including Grade 4.8 Bolts. These bolts are crafted to meet international standards, ensuring dependable performance for general-purpose fastening tasks. With a solid mix of moderate tensile strength and ductility, Grade 4.8 Bolts are perfect for situations where standard strength and trustworthy fastening are essential. MUKAU FASTENERS utilizes cutting-edge manufacturing techniques and rigorous quality control to produce bolts that guarantee secure connections, consistent mechanical performance, and a long lifespan for engineers, contractors, and industrial users alike.
| 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.
Typically made from medium carbon steel, Grade 4.8 Bolts boast a tensile strength of about 400 MPa and a yield strength of around 320 MPa. They strike a balance with moderate hardness and good ductility, allowing them to handle everyday mechanical loads without breaking. The precision threading ensures a snug fit with matching nuts, while the material properties deliver reliable performance under standard industrial pressures. These features make Grade 4.8 Bolts an excellent choice for structural, machinery, and general engineering applications where moderate strength is all that’s needed.
You’ll find Grade 4.8 Bolts commonly used in construction, automotive work, machinery assembly, and various engineering projects. They’re ideal for securing light to medium structural components, machinery parts, and equipment where high-strength fasteners aren’t necessary. These bolts also come in handy for maintenance, repair, and low-pressure fastening tasks across different industries. MUKAU FASTENERS offers Grade 4.8 Bolts that adhere to strict industrial standards, providing reliable, cost-effective, and durable fastening solutions for everyday engineering and industrial requirements.
Mukau Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kinshasa, Congo, with over 8 years of experience serving global industries.
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