Grade 12.9 High-Strength Carbon Steel Extended Length Hex Socket Head Cap Screws (M4-M20, 105-310mm) for Industrial & New Energy Systems DIN912
The Carbon Steel Extend Length Hexagon Hex Socket Head Cap Screws (DIN912) are high-strength fasteners designed for industrial and energy applications requiring precision, durability, and extended length options. Manufactured from Grade 12.9 carbon steel, these screws provide exceptional mechanical performance and secure fastening under heavy loads. Available in sizes from M4 to M20, they cater to a wide range of assembly needs.
Key Features
- High-Strength Carbon Steel – Grade 12.9 ensures excellent tensile strength and reliability in demanding environments.
- Extended Length Range – Sizes M4 to M20, length 105–310 mm, providing flexibility for diverse industrial and mechanical applications.
- DIN Standard Compliance – Manufactured to DIN912 standards for consistent quality and precise fit.
Key attributes
| Item | Details |
|---|---|
| OE NO. | DIN912 |
| Grade | class12.9 |
| Purpose | for replace/repair |
| Place of Origin | Zhejiang, China |
| Product name | Extend Length Hexagon Hex Socket Head Cap Screws |
| Condition | NEW |
| head style | Hex |
| Size | M4-M20 |
| Surface Treatment | Black |
Packaging and deliver
| Item | Details |
|---|---|
| Selling Units | Single item |
| Single Package Size | 20X20X15 cm |
| Single Gross Weight | 20.000 kg |
| MOQ | 100 pcs |
| Lead Time | 31 days (to be negotiated for bulk orders) |










