High Tensile Grade 5.8 Bolt Manufacturer and Supplier in Dubai, UAE
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Majid Fasteners is a leading manufacturer and supplier of High Tensile Grade 5.8 Bolts in Dubai, UAE, known for delivering reliable and durable fastening solutions for diverse industrial applications. With a strong commitment to quality, precision engineering, and international standards, Majid Fasteners provides products that ensure superior strength and performance in demanding environments. Their advanced manufacturing capabilities, strict quality control, and timely delivery have earned them a solid reputation across construction, oil & gas, marine, and engineering sectors. As a trusted fastener supplier in the UAE, Majid Fasteners continues to offer dependable, cost-effective, and high-quality fastening solutions to meet evolving industry needs.
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What is High Tensile Grade 5.8 Bolt
High Tensile Grade 5.8 Bolts are manufactured using medium‐carbon steel with a typical composition of carbon (0.25–0.55%), manganese (0.60–1.65%), and small amounts of silicon, sulfur, and phosphorus for improved machinability. These bolts offer balanced strength and ductility, featuring a minimum tensile strength of 520 MPa and yield strength of 340 MPa. With good elongation and reliable load-bearing capacity, Grade 5.8 bolts are ideal for structural, automotive, and general engineering applications where moderate tensile strength and dependable performance are required.
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Grade 5.8 Bolts Specifications
| Grade 5.8 Fasteners Grades | DIN 933 Grade 12.9 |
| Grade 5.8 Bolts Standard | ASTM F568, ASME SF568 |
| Grade 5.8 studs Size | Dia 1.6mm to 100 mm Inch 3/4“ to 3.1/2“ |
| Grade 5.8 Fasteners finish | Zinc plated / Plain / Hot dip galvanised |
Grade 5.8 Bolts Chemical Composition
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 | |||
5.8 Grade Bolt | Carbon steel | – | 0,55 | 0,050 | 0,060 | Not specified | – |
Grade 5.8 Bolts Mechanical Properties
Head marking | Grade | Material | Proof strength | Yield stress (min.) | Tensile strength (min.) | Core hardness (Rockwell) |
Class 5.8 | Low or medium carbon steel | 380 Mpa | 420 Mpa | 520 Mpa | B82-95 |
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High Tensile Grade 5.8 Bolt Types
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High Tensile Grade 5.8 Bolt Uses
High Tensile Grade 5.8 Bolts are widely used across industries due to their reliable strength and versatility. They are commonly applied in construction projects for assembling structural components, beams, and supports. In the automotive sector, these bolts secure engine parts, chassis components, and suspension systems. They are also used in machinery, equipment assembly, and general engineering applications where moderate tensile strength is required. Additionally, Grade 5.8 bolts are suitable for furniture manufacturing, agricultural equipment, and light to medium-duty industrial installations, offering dependable fastening performance in everyday mechanical and structural operations.






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