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Brian Fasteners, located in Houston, USA, is a reliable manufacturer and supplier of top-notch industrial fasteners, with a focus on High Tensile Grade 4.8 Bolts. Known for their durability, precision, and dependability, Brian Fasteners caters to a diverse array of industries, including construction, automotive, manufacturing, and infrastructure. Our cutting-edge facility, combined with our skilled team, guarantees that every bolt adheres to international quality standards. We’re dedicated to providing performance-driven solutions tailored to your project needs, making us a go-to partner for clients who value excellence in fastener technology throughout the United States and beyond.
High Tensile Grade 4.8 Bolts are primarily made from medium carbon steel, typically featuring around 0.40% carbon, 0.70–0.90% manganese, along with trace amounts of sulfur and phosphorus. These bolts strike a great balance between strength and ductility. In terms of mechanics, they boast a tensile strength of 400 MPa and a yield strength of at least 320 MPa. Their moderate hardness makes them perfect for general engineering applications, providing a secure and stable fastening solution without sacrificing machinability or ease of installation.
| Chemical Properties | ||||
|---|---|---|---|---|
| C | Si | Mn | P | S |
| 0.14 | 0.11 | 0.38 | 0.014 | 0.026 |
High Tensile Grade/ Class | Material | Proof strength | Yield strength (min.) | Tensile strength (min.) | Core hardness (Rockwell) |
Class 4.8 | Low or medium carbon steel | 310 Mpa | 340 Mpa | 420 Mpa | B71-95 |
| Class 4.8 Fasteners Sizes |
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| High Tensile 4.8 Grade Bolts Size Metric |
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| Grade 4.8 Hex Bolts Size Inch |
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| Preferred Class 4.8 Nut Bolt Drawing Formats | JPEG, PDF, CAD, STP, IGS |
| Standard | Manufacturer of Grade 4.8 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 4.8 Bolt Length | 3 mm to 200 mm |
| Grade 4.8 Steel Bolts & Screws US Threads | Unified National Coarse (UNC), BSF, UNJF, UNR, METRIC, UNK, UNJC, BSW, Unified national extra fine (UNEF), Unified national fine (UNF), Constant-pitch threads |
| Grade 4.8 Bolts Head drive | Phillips/Slot, Phillips, Slotted, and Six-Lobe 4.8 screw, etc |
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.
You’ll find High Tensile Grade 4.8 Bolts widely used in construction, machinery, and automotive sectors where moderate strength is essential. They’re great for assembling structural frameworks, securing mechanical components, and supporting load-bearing joints in both static and dynamic systems. Commonly found in manufacturing equipment, rail infrastructure, agricultural machinery, and light fabrication projects, their dependable tensile properties make them ideal for environments where performance and cost-effectiveness are key. Thanks to their standard grade classification, they provide a practical solution for a variety of general-purpose fastening needs.
Our grade 4.8 bolts are carefully loaded to prevent damage during shipping. Standard export packaging comprises wooden boxes or boxes that meet international export packaging standards. For quality control and compliance, we are professional for EN 10204-3.1, EN 10204-3.2, raw material certificates, NABL-approved laboratory test reports, 100% radiography test reports, and third-party inspection reports -We issue test certificates.
Brian Fasteners is a leading manufacturer and supplier of high-quality fasteners in Houston , USA, with over 8 years of experience serving global industries.
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