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China DIN931/DIN933 Hex Bolt and Nut Suppliers - High-Quality Steel Hex Cap Screw Factory
| 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.
Frequently Asked Questions
What standards do these hex bolts comply with?
These hex bolts are manufactured according to the standard DIN931 and DIN933 specifications.
What grades of hex bolts and nuts are available?
We offer multiple strength grades to suit various mechanical requirements, including 4.8, 6.8, 8.8, 10.9, and 12.9.
What materials are used in manufacturing these fasteners?
The bolts are made from high-quality low carbon steel, medium carbon steel (such as 35# and 45#), or alloy steel.
What surface finishes are available for rust prevention?
Available surface treatments include black oxide (which forms an protective oxide film), zinc plating, and hot dip galvanizing.
What is the typical delivery timeframe for orders?
The typical delivery time is normally between 30 to 40 days, packaged securely in cartons and pallets or according to specific customer requirements.