Hot-Dip Galvanized Bolts
- Material: 35K carbon steel (Grade 4.8)
- Surface Treatment: Hot-dip galvanizing (HDG), zinc layer ≥ 54µm
- Specification: M20 × L20 (metric thread, length 20mm)
- Head Type: Slotted round/cup head (low stress concentration)
- Standard: Custom specification, suitable for light-duty applications
Product Overview of Hot-Dip Galvanized Bolts
Designed for light-duty mechanical, construction, and electrical applications, our M20×L20 Hot-Dip galvanized slotted round head bolt is an affordable, corrosion-resistant fastening. It is perfect for settings where durability and cost effectiveness are top concerns because it strikes a balance between dependable performance and long-term rust protection. It is made of 35K carbon steel with a hot-dip galvanizing (HDG) coating.
Key Advantages of Hot-Dip Galvanized Bolts
- Increased Resistance to Corrosion: Electrochemical protection is provided by the dense, sacrificial zinc coating created by the hot-dip galvanizing process. In humid or outdoor conditions, the zinc layer prolongs the service life of the steel by preventing rust even if the surface is scraped.
- Easy and Adaptable Installation: It is perfect for manual assembly in on-site construction or equipment maintenance since the slotted round head design is compatible with ordinary flathead screwdrivers. Additionally, the low-profile head improves structural stability by lowering stress concentration.
- Economical Performance: This Grade 4.8 HDG bolt offers dependable basic strength and rust protection at a much lower cost than stainless steel or high-strength bolts, making it ideal for large-scale projects.
Manufacturing & Quality Control of Hot-Dip Galvanized Bolts
- For consistent mechanical qualities, 35K carbon steel is used as the raw material.
- Galvanizing Process: Uniform zinc layer thickness ≥ 54µm is ensured by controlled hot-dip treatment.
- Dimensional tests, thread gauging, and coating thickness verification are all part of the inspection process.
- Customization: OEM support for different finishes, sizes, or materials to meet project requirements.
Typical Applications of Hot-Dip Galvanized Bolts
Hot-Dip galvanized bolts are ideal for use in :
- Equipment assembly and light-duty mechanical connections
- Guardrails, support brackets, and structural fasteners in civil construction.
- Installing outdoor fixtures and electrical equipment
- Basic corrosion resistance is required for general-purpose fastening.
Why Choose KENENG as a Trusted Hot-Dip Galvanized Bolt Supplier
For light-duty fastening requirements, KENENG’s M20×L20 HDG slotted round head bolt is a dependable and useful option. It is a reliable option for building, electrical, and mechanical applications all over the world because it combines long-lasting hot-dip galvanizing, simple installation, and affordability.
- Over two decades of experience in the production of precision fasteners
- Strict quality control and dependable lead times are guaranteed by in-house production.
- Affordable prices without sacrificing corrosion resistance
- Complete assistance with export logistics and documentation for clients worldwide
