DIN558 EN ISO 4018 Hexagon Head Screws-Product Grade C Class4.8 6.8 Carbon Steel Q195/35K Plain/Zinc Plating
The advantages of C-grade hexagon head bolts
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Reliable Connection: C-grade hexagon head bolts provide a stable and reliable connection due to their precise thread design and high-quality materials. This ensures a secure fit and minimizes the risk of loosening or failure.
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Easy Installation and Removal: The hexagon head design of these bolts allows for easy tightening and loosening with common tools such as wrenches and screwdrivers. This facilitates efficient installation and disassembly processes.
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Versatility: C-grade hexagon head bolts are widely applicable across various industries and applications. Their standardized dimensions and specifications make them suitable for a range of connections and fastening requirements.
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Durability: Manufactured from durable materials, C-grade hexagon head bolts are capable of enduring heavy loads and harsh environments. They maintain their performance over extended periods of use, reducing the need for frequent replacement.
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Cost-effectiveness: While offering excellent performance, C-grade hexagon head bolts are often cost-effective compared to higher-grade options. This makes them a popular choice for applications where reliability and value are key considerations.
DIN558 ISO 4018 standard hexagon head screws typically have the following features:
- Hexagonal Head Design: They feature a hexagonal head that allows for easy tightening and loosening with a wrench or screwdriver.
- Standardized Dimensions: The screws conform to international standards, ensuring consistent dimensions and compatibility with nuts and threaded holes.
- Varied Materials: Available in various materials such as carbon steel, stainless steel, and alloy steel, depending on the application requirements.
- Multiple Thread Types: They can be found with metric or inch threads, coarse or fine pitches, depending on the specific ISO 4018 standard.
Applications:
DIN558 ISO 4018 hexagon head screws are commonly used in the following applications:
- Machinery and Equipment: For fastening components in machinery, equipment, and tools.
- Automotive Industry: For connecting parts in vehicles, such as engines, chassis, and suspension systems.
- Construction: For securing fixtures, brackets, and other structural components in buildings and infrastructure.
- Furniture and Fixtures: For joining and assembling furniture, cabinets, and other fixtures.

Screw Thread d | |
P | Pitch | a | max | c | max | da | max | dw | min | e | min | k | Nominal Size | min | max | k1 | min | r | min | s | max=nominal size | min | | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | 3 | 3.5 | 4 | 3.2 | 4 | 5 | 6 | 7 | 8 | 10 | 12 | 14 | 16 | 0.5 | 0.5 | 0.6 | 0.6 | 0.6 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 6 | 7.2 | 10.2 | 12.2 | 14.7 | 18.7 | 24.4 | 28.4 | 35.4 | 42.4 | 6.7 | 8.7 | 11.4 | 15.4 | 17.2 | 22 | 27.7 | 33.2 | 42.7 | 51.1 | 8.63 | 10.89 | 14.2 | 18.72 | 20.88 | 26.17 | 32.95 | 39.55 | 50.85 | 60.79 | 3.5 | 4 | 5.3 | 6.4 | 7.5 | 10 | 12.5 | 15 | 18.7 | 22.5 | 3.12 | 3.62 | 4.92 | 5.95 | 7.05 | 9.25 | 11.6 | 14.1 | 17.65 | 21.45 | 3.88 | 4.38 | 5.68 | 6.85 | 7.95 | 10.75 | 13.4 | 15.9 | 19.75 | 23.55 | 2.2 | 2.5 | 3.45 | 4.2 | 4.95 | 6.5 | 8.1 | 9.9 | 12.4 | 15 | 0.2 | 0.25 | 0.4 | 0.4 | 0.6 | 0.6 | 0.8 | 0.8 | 1 | 1 | 8 | 10 | 13 | 17 | 19 | 24 | 30 | 36 | 46 | 55 | 7.64 | 9.64 | 12.57 | 16.57 | 18.48 | 23.16 | 29.16 | 35 | 45 | 53.8 | |