SAE J429 Grade 8 Threaded Rod
Key Points of SAE J429 Threaded Rods:
Application: Commonly used in automotive assemblies, heavy trucks, agricultural machinery, construction equipment, and other high-stress mechanical systems.
Materials: Typically medium-carbon alloy steel, quenched and tempered to achieve high strength.
Grades: SAE J429 includes Grade 2, Grade 5, and Grade 8, with Grade 8 offering the highest strength.
Testing Requirements: Fasteners are tested for tensile strength, yield strength, hardness, and toughness to ensure they meet critical safety and performance standards.
| 01 SAE J429 Grade 8 Threaded Rod | Material: Medium-carbon alloy steel, quenched and tempered. Tensile Strength: Minimum 150 ksi (1040 MPa). Yield Strength: Minimum 130 ksi (895 MPa). Applications: Automotive suspensions, heavy machinery joints, engine components, and structural bolting requiring maximum strength. Temperature Range: Typically suitable up to ~400°F (204°C). Properties: Very high tensile and yield strength for demanding applications. Excellent wear and fatigue resistance. Requires protective coatings (zinc plating, phosphate, or hot-dip galvanizing) for corrosion resistance. |
| Feature | Grade 2 | Grade 5 | Grade 8 |
| Material | Low/medium carbon steel | Medium carbon steel, quenched & tempered | Medium-carbon alloy steel, quenched & tempered |
| Tensile Strength | ~74 ksi (510 MPa) | ~120 ksi (830 MPa) | ~150 ksi (1040 MPa) |
| Yield Strength | ~57 ksi (393 MPa) | ~92 ksi (635 MPa) | ~130 ksi (895 MPa) |
| Applications | Light-duty fastening | Automotive, construction | Heavy-duty, high-stress applications |
| Corrosion Resistance | Requires coating | Requires coating | Requires coating |
SAE J429 Grade 8
SAE J429 Grade 8
SAE J429 Grade 8
