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At Hazlewood Fasteners in Canberra, Australia, our high-tensile Grade 4.8 bolts redefine dependable everyday strength with engineered precision and rugged practicality. Designed for builders, fabricators, and machine manufacturers who demand reliable holding power without sacrificing efficiency or economy, these bolts deliver resilient grip, stable torque retention, and consistent operational durability. Perfect for medium-duty structural applications, machinery frames, transport systems, and workshop fabrication, they thrive where balanced strength and long-term reliability matter. When your projects call for fastening integrity that works as hard as you do, Hazlewood’s Grade 4.8 bolts provide unwavering performance backed by industrial-grade engineering.
Grade 4.8 bolts are manufactured from carbon steel, refined to offer a harmonized mix of strength, ductility, and service-life stability. With a minimum tensile strength of 400 MPa and a yield ratio of 80%, they deliver enhanced elasticity and controlled toughness, allowing them to absorb shock loads and mechanical stress without brittle failure. Their metallurgical profile ensures steady torque retention, resistance to shear forces, and safe deformation under stress, making them ideal for applications demanding dependable fastening without extreme over-specification.
| Chemical Properties | ||||
|---|---|---|---|---|
| C | Si | Mn | P | S |
| 0.14 | 0.11 | 0.38 | 0.014 | 0.026 |
| 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.
High-tensile Grade 4.8 bolts are widely employed across general construction, agricultural equipment, automotive components, industrial machinery assembly, furniture fabrication, warehouse systems, and light structural engineering. They perform reliably in steel-to-timber joints, machine frames, utility mounting, brackets, fittings, and mechanical support systems, especially where medium tensile strength and resilience to vibration or fluctuating loads are essential. Favoured by engineers and contractors seeking cost-effective reliability, these bolts excel in everyday industrial environments, offering a robust fastening solution for projects that demand trustworthy performance, controlled flexibility, and long-lasting structural security.
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.
Hazlewood Fasteners is a leading manufacturer and supplier of high-quality fasteners in Canberra, Australia, with over 8 years of experience serving global industries.
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