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DIN912
HINA
HINA2024120302
Blackened hexagon socket bolts (without knurling) are a common fastener. Blackened hexagon socket bolts are available in various sizes. Their nominal diameters generally range from M3 to M30, and there are different lengths to choose from to meet various assembly requirements. For example, in small electronic products, smaller bolts such as M3 and M4 may be used, while in large mechanical equipment, bolts of M16, M20 or even larger specifications may be used.
- Usually made of carbon steel, stainless steel and other materials. Blackened hexagon socket bolts made of carbon steel have low cost and average strength, and are suitable for some ordinary mechanical structures or equipment that do not require particularly high strength; blackened hexagon socket bolts made of stainless steel, such as SUS201, SUS304, SUS316, etc., have good corrosion resistance and can be used in humid and corrosive environments. They can effectively prevent rust and corrosion and extend service life.
- Because its appearance after blackening is relatively low-key and simple, and it has certain rust prevention and wear resistance, it is widely used in many industries such as machinery manufacturing, automobile manufacturing, electronic equipment, furniture manufacturing, and construction. In some occasions where the appearance is not high but practicality and economy are important, such as the connection of internal structural parts of mechanical equipment and the assembly of some ordinary furniture, blackened hexagon socket bolts (without knurling) can play an important fastening role.
Surface treatment
- Blackening is one of its main surface treatment methods. A black oxide film is formed on the surface of the bolt by chemical or electrochemical methods. This oxide film can improve the surface hardness and wear resistance of the bolt, and to a certain extent enhance its rust resistance, so that it can maintain good performance under general environmental conditions. However, compared with surface treatment methods such as nickel plating and zinc plating, the rust prevention effect of blackening is relatively weak, and additional protective measures may be required in some harsh corrosive environments.
Haina is committed to providing customers with high-quality stainless steel standard fasteners and professional services to meet various engineering needs. We have a large amount of spot inventory to ensure fast delivery and save you waiting time. In addition, we provide the following value-added services to help your purchasing experience:
1. Free samples: provide samples for customer testing.
2. 3.1 Test report: quality test report that meets international standards.
3. Video factory inspection: support video factory inspection to demonstrate production process and quality management.
Advantages
- Sufficient inventory: quick response to order requirements.
- Quality assurance: strict quality control to ensure product reliability.
Haina is committed to providing efficient and high-quality fastener services.
What is the difference between a hex bolt and an allen bolt?
A hex bolt has a hexagonal head for a wrench, while an Allen bolt has a hexagonal socket in the head for an Allen (hex) key.
Why are Allen bolts used?
Allen bolts are used because they provide a secure, tamper-resistant fastening, and the hexagonal socket allows for better torque distribution. This makes them ideal for applications where space is limited, as they can be tightened or loosened in confined areas using an Allen key. They're commonly used in machinery, furniture, bicycles, and automotive parts.
How many types of Allen bolts are there?
There are several types of Allen bolts:Standard Allen Bolt、Button Head Allen Bolt、Flat Head Allen Bolt、Socket Cap Bolt、Set Screw (Grub Screw).
Blackened hexagon socket bolts (without knurling) are a common fastener. Blackened hexagon socket bolts are available in various sizes. Their nominal diameters generally range from M3 to M30, and there are different lengths to choose from to meet various assembly requirements. For example, in small electronic products, smaller bolts such as M3 and M4 may be used, while in large mechanical equipment, bolts of M16, M20 or even larger specifications may be used.
- Usually made of carbon steel, stainless steel and other materials. Blackened hexagon socket bolts made of carbon steel have low cost and average strength, and are suitable for some ordinary mechanical structures or equipment that do not require particularly high strength; blackened hexagon socket bolts made of stainless steel, such as SUS201, SUS304, SUS316, etc., have good corrosion resistance and can be used in humid and corrosive environments. They can effectively prevent rust and corrosion and extend service life.
- Because its appearance after blackening is relatively low-key and simple, and it has certain rust prevention and wear resistance, it is widely used in many industries such as machinery manufacturing, automobile manufacturing, electronic equipment, furniture manufacturing, and construction. In some occasions where the appearance is not high but practicality and economy are important, such as the connection of internal structural parts of mechanical equipment and the assembly of some ordinary furniture, blackened hexagon socket bolts (without knurling) can play an important fastening role.
Surface treatment
- Blackening is one of its main surface treatment methods. A black oxide film is formed on the surface of the bolt by chemical or electrochemical methods. This oxide film can improve the surface hardness and wear resistance of the bolt, and to a certain extent enhance its rust resistance, so that it can maintain good performance under general environmental conditions. However, compared with surface treatment methods such as nickel plating and zinc plating, the rust prevention effect of blackening is relatively weak, and additional protective measures may be required in some harsh corrosive environments.
Haina is committed to providing customers with high-quality stainless steel standard fasteners and professional services to meet various engineering needs. We have a large amount of spot inventory to ensure fast delivery and save you waiting time. In addition, we provide the following value-added services to help your purchasing experience:
1. Free samples: provide samples for customer testing.
2. 3.1 Test report: quality test report that meets international standards.
3. Video factory inspection: support video factory inspection to demonstrate production process and quality management.
Advantages
- Sufficient inventory: quick response to order requirements.
- Quality assurance: strict quality control to ensure product reliability.
Haina is committed to providing efficient and high-quality fastener services.
What is the difference between a hex bolt and an allen bolt?
A hex bolt has a hexagonal head for a wrench, while an Allen bolt has a hexagonal socket in the head for an Allen (hex) key.
Why are Allen bolts used?
Allen bolts are used because they provide a secure, tamper-resistant fastening, and the hexagonal socket allows for better torque distribution. This makes them ideal for applications where space is limited, as they can be tightened or loosened in confined areas using an Allen key. They're commonly used in machinery, furniture, bicycles, and automotive parts.
How many types of Allen bolts are there?
There are several types of Allen bolts:Standard Allen Bolt、Button Head Allen Bolt、Flat Head Allen Bolt、Socket Cap Bolt、Set Screw (Grub Screw).
