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DIN931/DIN933 hex bolt and nut steel hex cap screw bolt
| Standard: | DIN931 933 |
| Grade: | 4.8/6.8/8.8/10.9/12.9 |
| Material: | Low carbon steel/medium carbon steel/alloy steel |
| Size: | M3-M100; 1/4″-3″ |
| Finish: | black/zinc plated/hot dip galvanized |
| Mark: | According to customer’s requirement |
| Delivery time: | Normally in 30-40 days. |
| Quality: | Top high quality. |
| Package: | Cartons&pallets or according to customer’s requirement. |
Product Advantages
Precision Machining
Measure and process using precision machine tools and measuring tools under strictly controlled environmental conditions.
High-quality carbon steel(35#/45#)
With long life, low heat generation, high hardness, high rigidity, low noise, high wear resistance and other characteristics.
Cost-effective
☆ The use of high-quality carbon steel steel, after precision processing and forming, greatly improves the user experience.
Surface Treatment
BLACK
Black is a common method for metal heat treatment. The principle is to make an oxide film on the metal surface to isolate the air and achieve rust prevention. Blackening is a common method for metal heat treatment. The principle is to make an oxide film on the metal surface to isolate the air and achieve rust prevention.
