Hex Heavy Bolt Carbon Steel Grade 12.9 M16 7/16 Inch Black Oxide Finish High Strength Structural Support
Product Attributes
| Attribute | Value |
| Usage | Fastening |
| Size | Various sizes available |
| Style | Steel hex head with washer nut |
| Head Style | Hexagon head |
| Strength | High |
| Finish | Polished/Zinc/Anodizing |
| Manufacturer | JIA SHAN Hardward Company |
| Length | Customizable |
| Package | Small Packing+Carton Packing+Pallet |
| Standard | DIN |
| Package Quantity | 100 pieces |
| Shape | Bolt |
| Measurement System | INCH, Metric |
| Port | Shenzhen |
| Quality | Inspection before shipment |
| Color | Customizable |
| Material | Carbon Steel grade 4.8/8.8/12.9 |
Product Description
This high-strength hex heavy bolt is made from carbon steel grade 12.9, offering exceptional tensile strength for structural support in critical applications. The M16 size with a 7/16-inch thread is engineered for large structural projects including steel structures, bridges, and high-load equipment. The black oxide finish provides enhanced corrosion resistance and a professional appearance.
Designed for industrial, mechanical, and structural applications, this bolt delivers heavy-duty performance and long-term reliability in demanding environments.
Applications
12.9 grade screws are manufactured using SCM435 alloy steel with minimum tensile strength of 1220Mpa and hardness of 39~44HRC. These ultra-high strength fasteners are primarily used in:
- Textile industry equipment
- Hydraulic systems
- Injection molding machinery
- Industrial machinery components
As the top-grade screw variety, 12.9 level fasteners offer exceptional hardness and tensile strength, making them ideal for special industrial applications with high performance requirements.
Material Composition
| No. | C% | Cr% | Ni% | Mo% |
| 304 | 0.07 | 17.5-19.5 | 8.0-10.5 | / |
| 316 | 0.08 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 |
| 301 | 0.15 | 16.0-18.1 | 6-8 | / |
| 310 | 0.08 | 24-26 | 19-22 | / |
Package
