High-Strength Hex Head Bolts | Grade 10.9 & 12.9 | ASME B18.2.1 / ANSI F3125 A490
High-Strength Hex Head Bolts | Grade 10.9 & 12.9 | ASME B18.2.1 / ANSI F3125 A490
SSM supplies premium high-strength hex head bolts in Grade 10.9 and 12.9, manufactured according to ASME B18.2.1 and ANSI F3125 / A490 standards. These partially threaded bolts are engineered for heavy-duty mechanical, structural, and industrial applications requiring high tensile strength and durability.
Product Overview
Hex head bolts with partial threads are ideal for applications where full thread engagement is not necessary, providing maximum shear strength and secure fastening.
These bolts are widely used in construction, machinery, power generation, and steel structures, ensuring long-term performance in high-load and high-stress environments.
Material and Mechanical Properties
| Grade | Material Features | Tensile Strength |
|---|---|---|
| 10.9 | Alloy steel, quenched & tempered | 1040–1200 MPa |
| 12.9 | Alloy steel, quenched & tempered | 1200–1400 MPa |
Key Features:
High-strength alloy steel
Heat-treated for maximum toughness and durability
Precision-machined threads for secure torque
Resistant to wear, fatigue, and mechanical stress
Technical Specifications
| Parameter | Description |
|---|---|
| Standard | ASME B18.2.1 / ANSI F3125 / A490 |
| Type | Hex Head Bolt, Partial Thread |
| Grades | 10.9 / 12.9 |
| Diameter Range | M6 – M100 / ¼" – 4" |
| Thread Type | UNC / UNF / Metric |
| Length Range | Customizable |
| Finish | Plain, Black Oxide, Zinc Plated, Hot Dip Galvanized |
| Testing | Tensile, Hardness, Torque, and NDT |
| Certification | EN 10204 3.1 / 3.2, Mill Test Report |
Applications
Steel and concrete structural connections
Heavy machinery and industrial equipment
Power generation plants
Bridge and construction projects
High-load engineering assemblies
Advantages of SSM High-Strength Hex Bolts
Reliable load-bearing capacity for critical applications
High tensile and yield strength ensures safety and durability
Precision manufacturing meets international standards
Custom sizes, coatings, and lengths available
30+ years of experience in high-performance fasteners
Conclusion
SSM's Grade 10.9 & 12.9 Hex Head Bolts (Partial Thread) provide exceptional strength, durability, and reliability for industrial, structural, and mechanical applications.
Manufactured to ASME B18.2.1 / ANSI F3125 / A490 standards, these high-performance bolts are ideal for heavy-duty and high-stress fastening requirements.
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