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DIN931
HINA
HINA2024112805
Blackened Zinc Plated Gr4.8 DIN931 Half-threaded Hexagon Head Bolts
Blackened half-threaded hexagonal bolt (DIN 931) is a hexagonal head bolt that meets the DIN 931 standard and has a half-thread design. It is commonly used in the machinery and construction industries. The surface of this type of bolt is blackened, which mainly provides corrosion protection and improves the surface hardness.
Blackened half-threaded hexagonal bolt (DIN 931) is a bolt that meets the German industrial standard DIN 931. Its main feature is the half-thread design (that is, part of the length of the bolt has threads). This design usually makes it more stable and safe in some fixing applications. The surface of the bolt is blackened to give it a certain degree of corrosion resistance and a black surface.
Blackened half-threaded hexagonal bolts are suitable for various scenarios that require reliable connections, especially in the following fields:
- Mechanical equipment: used for the connection and fixation of mechanical equipment, especially in environments with high strength requirements.
- Automotive industry: used for the connection of automobile chassis, engines and other key components.
- Construction industry: used in steel structures or building frames to connect steel and other building materials.
- Electrical industry: used in electrical equipment, such as motors and electrical equipment assembly.
- Construction machinery: such as the assembly of heavy equipment such as cranes and excavators.
- Blackening treatment: Through chemical oxidation treatment, a black oxide film is formed on the surface, providing good corrosion resistance and wear resistance.
- Semi-threaded design: The semi-threaded design allows the bolt to have higher tensile strength in the application and can provide stronger fixing force in environments with greater force.
- High strength: Bolts that meet DIN 931 standards generally have higher strength and are suitable for connections with greater loads.
- Corrosion resistance: Blackening treatment can effectively prevent corrosion and is suitable for use in environments with moderate humidity. Although it has slightly weaker rust resistance than galvanized bolts, it is less expensive.
- Easy to install: The hexagonal head design makes it easy to tighten with standard tools (such as wrenches or pliers).
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.
1.What maintenance matters should be paid attention to during the use of blackened hexagonal bolts?
During use, the surface of the bolt should be protected from mechanical damage to avoid damaging the blackened film and affecting its anti-rust and decorative effects. If the bolt is in a relatively humid or corrosive environment, anti-rust oil can be applied regularly to enhance its anti-rust ability. During storage, it should be kept dry and ventilated to prevent the bolts from getting damp and rusting.
2.What is color zinc treatment?
Color zinc treatment is an electroplating process that adds a passivation film to the galvanized layer to form a colorful protective zinc layer on the surface of the bolt. The specific process includes:
a. Electrogalvanizing: A layer of zinc (usually 5-20 microns thick) is plated on the surface of the bolt by electrolysis.
b. Passivation treatment: The galvanized layer is chemically passivated (mainly using chromate) to form a colorful oxide film.
c. Sealing treatment (optional): Further enhance the anti-corrosion performance.
3.Is a galvanized bolt stronger than zinc?
A galvanized bolt is not stronger than a zinc-coated bolt; the difference is in corrosion resistance, not strength.
Blackened Zinc Plated Gr4.8 DIN931 Half-threaded Hexagon Head Bolts
Blackened half-threaded hexagonal bolt (DIN 931) is a hexagonal head bolt that meets the DIN 931 standard and has a half-thread design. It is commonly used in the machinery and construction industries. The surface of this type of bolt is blackened, which mainly provides corrosion protection and improves the surface hardness.
Blackened half-threaded hexagonal bolt (DIN 931) is a bolt that meets the German industrial standard DIN 931. Its main feature is the half-thread design (that is, part of the length of the bolt has threads). This design usually makes it more stable and safe in some fixing applications. The surface of the bolt is blackened to give it a certain degree of corrosion resistance and a black surface.
Blackened half-threaded hexagonal bolts are suitable for various scenarios that require reliable connections, especially in the following fields:
- Mechanical equipment: used for the connection and fixation of mechanical equipment, especially in environments with high strength requirements.
- Automotive industry: used for the connection of automobile chassis, engines and other key components.
- Construction industry: used in steel structures or building frames to connect steel and other building materials.
- Electrical industry: used in electrical equipment, such as motors and electrical equipment assembly.
- Construction machinery: such as the assembly of heavy equipment such as cranes and excavators.
- Blackening treatment: Through chemical oxidation treatment, a black oxide film is formed on the surface, providing good corrosion resistance and wear resistance.
- Semi-threaded design: The semi-threaded design allows the bolt to have higher tensile strength in the application and can provide stronger fixing force in environments with greater force.
- High strength: Bolts that meet DIN 931 standards generally have higher strength and are suitable for connections with greater loads.
- Corrosion resistance: Blackening treatment can effectively prevent corrosion and is suitable for use in environments with moderate humidity. Although it has slightly weaker rust resistance than galvanized bolts, it is less expensive.
- Easy to install: The hexagonal head design makes it easy to tighten with standard tools (such as wrenches or pliers).
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.
1.What maintenance matters should be paid attention to during the use of blackened hexagonal bolts?
During use, the surface of the bolt should be protected from mechanical damage to avoid damaging the blackened film and affecting its anti-rust and decorative effects. If the bolt is in a relatively humid or corrosive environment, anti-rust oil can be applied regularly to enhance its anti-rust ability. During storage, it should be kept dry and ventilated to prevent the bolts from getting damp and rusting.
2.What is color zinc treatment?
Color zinc treatment is an electroplating process that adds a passivation film to the galvanized layer to form a colorful protective zinc layer on the surface of the bolt. The specific process includes:
a. Electrogalvanizing: A layer of zinc (usually 5-20 microns thick) is plated on the surface of the bolt by electrolysis.
b. Passivation treatment: The galvanized layer is chemically passivated (mainly using chromate) to form a colorful oxide film.
c. Sealing treatment (optional): Further enhance the anti-corrosion performance.
3.Is a galvanized bolt stronger than zinc?
A galvanized bolt is not stronger than a zinc-coated bolt; the difference is in corrosion resistance, not strength.
