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In the world of automotive suspension components, performance depends not only on design but also on the materials behind it. At Tekay Automotive, we manufacture U-bolts using Grade 10.9 steel, a high-strength alloy engineered for resilience, reliability, and road-tested performance.

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🔩 What is Grade 10.9 Steel?

Grade 10.9 refers to a fastener classification under the ISO 898-1 standard, where the first number (10) represents 1/10 of the minimum tensile strength in MPa, and the second number (9) refers to yield strength as a percentage of tensile strength.

• Tensile strength: ≥ 1040 MPa

• Yield strength: ≈ 940 MPa

• Heat-treated: Quenched and tempered

• Common uses: Load-bearing bolts, suspension U-bolts, axle connections, safety-critical fasteners

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✅ Why Tekay Uses Grade 10.9 for U-Bolts

1. Built for Stress and Load
U-bolts are not just clamps — they bear the vehicle’s weight, endure torque, and absorb vibration. Grade 10.9 handles these forces with confidence.

2. Heat Treatment Expertise
Our in-house heat treatment ensures that every U-bolt achieves the right balance of hardness, elasticity, and fatigue resistance.

3. Consistent Performance Across All Conditions
From desert heat to icy roads, Grade 10.9 steel maintains structural integrity under thermal, mechanical, and environmental stress.

4. Trusted by Professionals
Tekay’s Grade 10.9 U-bolts are used in thousands of commercial and heavy-duty vehicles across Europe, Asia, and the Middle East.

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🛠️ Tekay’s Manufacturing Precision

With cold drawing, CNC processes, and continuous inspection, we ensure every U-bolt meets exact standards — because reliability is not optional, it’s engineered.