Product Details
Product Description
China factory direct supply black oxide fully threaded stud bolts grade 10.9 for wholesale. These high-strength studs feature precision threading and black oxide finish for corrosion resistance. Perfect for heavy machinery, automotive, and construction applications. Grade 10.9 provides superior tensile strength and durability. Bulk discounts available for distributors and industrial suppliers.
Technical Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Standard | ISO 4017, DIN 975 | Thread Type | Fully Threaded |
| Property Class | 10.9 | Finish | Black Oxide |
| Material | Alloy Steel | Tensile Strength | 1040 MPa |
| Yield Strength | 940 MPa | Hardness | 32-39 HRC |
| Corrosion Resistance | Basic protection | Temperature Range | Up to 200°C |
Product Size
Our high tensile stud bolts are available in metric sizes from M6 to M24, fully threaded according to DIN 976 standard. Made from Grade 10.9 carbon steel with black oxide finish, these rods offer high tensile strength and corrosion protection for industrial applications.
| Diameter (mm) | Length (mm) | Thread Pitch (mm) | Strength Grade | Surface Finish | Material |
|---|---|---|---|---|---|
| M6 | 50–200 | 1.0 | 10.9 | Black Oxide | Carbon Steel |
| M8 | 50–250 | 1.25 | 10.9 | Black Oxide | Carbon Steel |
| M10 | 50–300 | 1.5 | 10.9 | Black Oxide | Carbon Steel |
| M12 | 60–400 | 1.75 | 10.9 | Black Oxide | Carbon Steel |
| M16 | 80–600 | 2.0 | 10.9 | Black Oxide | Carbon Steel |
| M20 | 100–800 | 2.5 | 10.9 | Black Oxide | Carbon Steel |
| M24 | 120–1000 | 3.0 | 10.9 | Black Oxide | Carbon Steel |
Note: Custom diameters and lengths can be produced according to drawings or project requirements. Bulk supply and OEM packaging available for distributors.
Application Scenarios
High tensile stud bolts and fully threaded rods are widely used in heavy-duty assembly and structural connections where strength and durability are critical.
They provide excellent clamping force and long service life under vibration or high stress.
Typical Applications:
- ✅ Steel Structures: Used for connecting beams, columns, and support frames.
- ✅ Machinery Assembly: Ideal for fixing heavy equipment, engines, and industrial machines.
- ✅ Flange Connections: Suitable for pressure vessels, pipelines, and mechanical joints.
- ✅ Power & Energy Plants: Commonly used in turbines, generators, and transmission systems.
- ✅ Transportation Equipment: Applied in railways, bridges, and heavy vehicles requiring reliable tension.
Frequently Asked Questions (B2B-oriented)
A: Grade 10.9 stud bolts have higher tensile strength and yield resistance, suitable for applications under high load or vibration. The black oxide finish provides mild corrosion resistance, reduces friction during assembly, and gives a professional industrial appearance.
A: The black oxide layer prevents light surface oxidation and improves oil retention during assembly. It is ideal for indoor or controlled environments. For outdoor or high-moisture applications, hot dip galvanization or zinc plating may be more suitable.
A: A Grade 10.9 stud bolt usually features: Tensile strength ≥ 1040 MPa, Yield strength ≥ 940 MPa, Hardness 32–39 HRC. These properties ensure high tensile reliability for structural and machinery connections.
A: All threaded rods and stud bolts are produced according to metric thread standards (DIN 976 / ISO 898-1). When paired with matching Grade 10 nuts and washers, they deliver consistent preload and fit tolerance for industrial assembly.
A: Yes. As a factory-direct threaded rod manufacturer in China, custom lengths, thread types, and coatings (black oxide, zinc, HDG) can be supplied according to engineering drawings or project requirements. Bulk supply and OEM labeling are available for distributors and industrial buyers.