Product Description
Our Hex Headed Bolt is a critical fastening component designed for the demanding requirements of semi-trailer chassis, suspension systems, and structural assemblies. Manufactured from high-grade alloy steel through cold forging and precision thread rolling, these bolts deliver exceptional tensile strength and fatigue resistance. The heat-treated construction ensures reliable performance under dynamic loads, vibration, and extreme weather conditions, making them ideal for heavy-duty transportation applications.
Each bolt undergoes rigorous quality control, including dimensional verification and hardness testing, to meet international standards. Available in multiple grades and coatings, our hex headed bolts provide optimal corrosion protection and long-term durability, reducing maintenance frequency and downtime.
Product Classification
Material Grades:
Grade 8.8 (ISO 898-1) – General purpose
Grade 10.9 (SAE J429) – High-strength applications
Grade 12.9 – Ultra-high strength for critical loads
01
Thread Types:
Full thread (DIN 933)
Partial thread (DIN 931)
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Coatings & Finishes:
Zinc plating (5-15μm) with yellow chromate
Hot-dip galvanized (50-80μm) for severe environments
Dacromet® coating for enhanced corrosion resistance
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Sizes:
Metric: M10 to M36
Imperial: 3/8" to 1-1/2"
Standards Compliance:
ISO 4014, DIN 931/933, ASTM A325
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Product Characteristics
Superior Strength: High tensile and yield strength to withstand dynamic trailer loads.
Vibration Resistance: Precision threads minimize self-loosening under road shocks.
Corrosion Protection: Multiple coating options for salt, moisture, and chemical resistance.
Precision Machining: Consistent thread pitch and shank diameter for secure fitment.
Temperature Stability: Reliable performance from -40°F to +300°F (-40°C to +150°C).
Key Advantages
Enhanced Safety
Engineered to prevent bolt failure in critical applications.
Long Service Life
Corrosion-resistant coatings extend replacement intervals.
Cost Efficiency
Reduced maintenance and downtime for fleets.
OEM Compatibility
Exact specifications match major trailer brands (Wabco, Meritor, SAF-Holland).
Custom Solutions
Available in custom lengths, threads, and head markings.
Applications
Chassis Assembly
Frame rail connections, crossmember fastening
Suspension Systems
U-bolt replacements, spring hanger mounts
Fifth Wheel & Coupling
Kingpin and mounting hardware
Brake Components
Caliper and rotor retention
Performance Data
Fatigue tested to 1,000,000 cycles at 75% of yield strength
Tensile strength: 800 MPa (Grade 8.8) to 1,200 MPa (Grade 12.9)
Torque values pre-calibrated for consistent clamping force
Why Choose Our Hex Headed Bolts?
Backed by ISO 9001 certification and batch traceability, our bolts ensure quality from production to installation. Whether for OEM manufacturing or aftermarket replacement, we provide solutions that meet global safety and performance standards.
Upgrade your trailer's fastening system with bolts built for reliability-engineered to keep heavy loads secure mile after mile.
(Contact us for technical datasheets or bulk order pricing.)
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