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DIN931
HINA
HINA2024112801
Colored zinc half-threaded hexagonal bolt is a half-threaded hexagonal bolt with a colored zinc surface treatment. It has excellent corrosion resistance and decorative properties and is widely used in machinery, construction, home appliances and other fields. Its colored zinc coating not only provides a certain degree of corrosion resistance, but also gives the bolt a colorful appearance. It is often used in occasions with certain requirements for appearance and performance.
Colored zinc half-threaded hexagonal bolt is a half-threaded hexagonal bolt produced according to DIN 931 or similar standards. The surface is electroplated with colored zinc (chromate passivation is applied after galvanizing) to form a multi-color (such as golden, green, blue and other gradient) zinc passivation layer. Its threaded part is a half-threaded design to enhance tensile strength and stability.
Colored zinc half-threaded hexagonal bolts are suitable for the following scenarios:
Machinery manufacturing: used for the connection of parts, especially in occasions with medium corrosion protection requirements.
Construction industry: steel structure connection, interior decoration bolts.
Home appliance manufacturing: used for the internal structure fixation of home appliance products, taking into account aesthetics.
Automobile industry: used for automobile chassis, engine and compartment parts.
General industry: often used in mechanical equipment or assembly with high requirements for appearance.
Advantages
Beautiful appearance: After the color zinc treatment, the surface of the bolt presents a colorful luster (gradients such as yellow, blue, and green), which is suitable for occasions with requirements for appearance.
Moderate corrosion resistance: The color zinc coating provides a certain degree of corrosion resistance and performs well in neutral environments or indoor environments.
Semi-threaded design: Enhanced strength, smooth rod part reduces stress concentration and improves tensile strength. Stable connection, suitable for occasions requiring high-precision connection.
Highly economical: Compared with hot-dip galvanizing or stainless steel treatment, color zinc bolts have lower costs and are suitable for scenes with medium anti-corrosion requirements.
Limitations
Limited corrosion resistance: The performance is not as good as hot-dip galvanizing or stainless steel bolts in humid, salt spray or acidic environments.
Surface wear: The coating is thin and easily damaged in strong friction or high load 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.
1.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.
2.What are the advantages and disadvantages of blackened hexagonal bolts compared with galvanized bolts?
The advantage is that the cost is relatively low, the blackening process is relatively simple, and the cost is lower than that of galvanizing. Moreover, the surface hardness of the bolts after blackening is relatively high, and they have certain wear resistance. The disadvantage is that the rust resistance is not as good as that of galvanized bolts, especially in some harsh outdoor environments or high humidity environments, galvanized bolts have better rust resistance and longer service life
3.What materials are blackened hexagonal bolts generally made of?
Common materials are carbon steel and alloy steel. For example, 8.8-grade blackened hexagonal bolts are generally made of 8.8-grade carbon steel; 12.9-grade high-strength blackened external hexagonal bolts are mostly made of SCM435 alloy steel or 35Crmo and other materials
Colored zinc half-threaded hexagonal bolt is a half-threaded hexagonal bolt with a colored zinc surface treatment. It has excellent corrosion resistance and decorative properties and is widely used in machinery, construction, home appliances and other fields. Its colored zinc coating not only provides a certain degree of corrosion resistance, but also gives the bolt a colorful appearance. It is often used in occasions with certain requirements for appearance and performance.
Colored zinc half-threaded hexagonal bolt is a half-threaded hexagonal bolt produced according to DIN 931 or similar standards. The surface is electroplated with colored zinc (chromate passivation is applied after galvanizing) to form a multi-color (such as golden, green, blue and other gradient) zinc passivation layer. Its threaded part is a half-threaded design to enhance tensile strength and stability.
Colored zinc half-threaded hexagonal bolts are suitable for the following scenarios:
Machinery manufacturing: used for the connection of parts, especially in occasions with medium corrosion protection requirements.
Construction industry: steel structure connection, interior decoration bolts.
Home appliance manufacturing: used for the internal structure fixation of home appliance products, taking into account aesthetics.
Automobile industry: used for automobile chassis, engine and compartment parts.
General industry: often used in mechanical equipment or assembly with high requirements for appearance.
Advantages
Beautiful appearance: After the color zinc treatment, the surface of the bolt presents a colorful luster (gradients such as yellow, blue, and green), which is suitable for occasions with requirements for appearance.
Moderate corrosion resistance: The color zinc coating provides a certain degree of corrosion resistance and performs well in neutral environments or indoor environments.
Semi-threaded design: Enhanced strength, smooth rod part reduces stress concentration and improves tensile strength. Stable connection, suitable for occasions requiring high-precision connection.
Highly economical: Compared with hot-dip galvanizing or stainless steel treatment, color zinc bolts have lower costs and are suitable for scenes with medium anti-corrosion requirements.
Limitations
Limited corrosion resistance: The performance is not as good as hot-dip galvanizing or stainless steel bolts in humid, salt spray or acidic environments.
Surface wear: The coating is thin and easily damaged in strong friction or high load 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.
1.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.
2.What are the advantages and disadvantages of blackened hexagonal bolts compared with galvanized bolts?
The advantage is that the cost is relatively low, the blackening process is relatively simple, and the cost is lower than that of galvanizing. Moreover, the surface hardness of the bolts after blackening is relatively high, and they have certain wear resistance. The disadvantage is that the rust resistance is not as good as that of galvanized bolts, especially in some harsh outdoor environments or high humidity environments, galvanized bolts have better rust resistance and longer service life
3.What materials are blackened hexagonal bolts generally made of?
Common materials are carbon steel and alloy steel. For example, 8.8-grade blackened hexagonal bolts are generally made of 8.8-grade carbon steel; 12.9-grade high-strength blackened external hexagonal bolts are mostly made of SCM435 alloy steel or 35Crmo and other materials
