Hex head bolts are known for their high strength and ease of installation.Key characteristics include excellent tensile and shear performance,making them suitable for dynamic load environments.The hot-dip galvanized surface finish provides good corrosion resistance,extending service life.The hex head design ensures a large tool contact area,reducing the risk of slippage and improving installation efficiency.Made from carbon steel and heat-treated to achieve Grade 5 strength,these bolts maintain their clamp under vibrational forces.The high-precision threads comply with international standards,ensuring compatibility with various nuts and washers.Furthermore,these bolts are reusable,retaining their performance after disassembly,which is ideal for applications requiring frequent maintenance.The overall design focuses on cost-effectiveness,offering a stable and reliable connection solution for industrial and construction fields.
Hex head bolt specifications strictly adhere to ASTM A307 or DIN 933 standards.The diameter range is from M6 to M24,and lengths from 20mm to 200mm,covering various application needs.Threads are metric coarse or fine,with pitch adjusted according to diameter;for example,the pitch for an M12 bolt is 1.75mm.Head height and width follow standard dimensions,such as a 19mm across-flats width for an M12 hex head.Surface finish options include galvanizing,phosphating,or Dacromet,with galvanized coating thickness typically between 8-12μm,providing corrosion resistance for over 72 hours in salt spray tests.The strength grade is Grade 5,with a minimum tensile strength of 120,000 PSI and a yield strength of approximately 92,000 PSI.The material composition is carbon steel with a carbon content of 0.25%-0.55%,along with additives like manganese and silicon for enhanced toughness.Packaging is usually in boxes of 100 or 500 pieces for convenient transport and storage.
Hex head bolts are widely used in building structures,machinery manufacturing,automotive assembly,and infrastructure projects.In construction,they connect steel beams,brackets,and concrete anchoring systems,providing structural stability.In machinery,they are common in equipment frames,drive components,and pump/valve installations,withstanding moderate vibration and load.In the automotive sector,they are used for engine mounts,chassis,and body assembly,benefiting from their high strength and easy removability.Additionally,they serve as standard fasteners in power equipment,agricultural machinery,and furniture manufacturing,ensuring secure component connections.Their versatility suits both indoor and outdoor environments,but the surface finish must be selected based on corrosion conditions.For instance,galvanized versions prevent rust in humid industrial areas,extending equipment lifespan.
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