Hex Head Bolt Grade 8.8

The Hex Head Bolt Grade 8.8 is a high-tensile, high-strength fastener crucial for demanding engineering and structural applications. It is identified by the prominent hexagonal head and is partially or fully threaded, making it suitable for high-load bearing joints. These bolts are manufactured to strict European and international standards (like ISO 4014 and ISO 4017) to ensure superior performance. Typical applications include construction, heavy machinery assembly, automotive chassis components, and general industrial fabrication where secure, durable, and vibration-resistant joining is essential. Zeron Fasteners specializes in the precision manufacturing and supply of these essential industrial fasteners, ensuring consistent quality and performance across all specifications.

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Hex Head Bolt Grade 8.8 Manufacturer in India

Hex Head Bolt Grade 8.8 Chemical Composition

Element Composition (% by mass)
Carbon (C) 0.15% to 0.40%
Silicon (Si) ≤ 0.40%
Manganese (Mn) ≥ 0.30%
Phosphorus (P) ≤ 0.035%
Sulfur (S) ≤ 0.035%
Boron (B) ≤ 0.003%

Hex Head Bolt Grade 8.8 Mechanical Properties

Property Minimum Value
Tensile Strength, Rm 800 N/mm2 (800 MPa)
Yield Strength, ReH 640 N/mm2 (640 MPa)
Elongation, A 12%
Hardness, Rockwell C23 to C34
Proof Load Stress, Sp 580 N/mm2 (580 MPa)

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