Hexagonal lengthening extra long with hard drilling screws, as defined by standards such as DIN7504K, are a type of self-drilling screw with a hexagonal head and an extended length designed for drilling into hard materials. These screws are engineered to provide a secure and durable connection in a variety of applications, especially where penetration into harder substrates is required.
Carbon Steel: Typically used for general applications.
Stainless Steel: For environments where corrosion resistance is required.
Alloy Steels: Used in applications requiring high strength or high temperature resistance.
Advantage:
S elf-Drilling Capability: The hardened drilling tip allows these screws to bore into materials without pre-drilling, saving time and effort.
Hexagonal Head: Provides a large bearing surface for better torque transfer during installation, reducing the risk of the tool slipping.
Extended Length: Designed for use in applications where extra length is needed to reach through multiple layers or into deeper substrates.
Hardened Material: Made from hardened steel, these screws offer increased durability and resistance to wear, suitable for tough materials.
Corrosion Resistance: Often treated with protective coatings like zinc plating, these screws resist rust and corrosion, making them suitable for outdoor use.
Scope of Application
Construction: Used in construction projects for securing materials like formwork, safety barriers, and drywall tracks to concrete or metal structures.
Metalworking: Ideal for attaching metal sheets or components in fabrication processes where a strong and secure connection is needed.
Automotive Industry: Employed in the automotive industry for assembling car interiors and exterior components.
Renovation and Repair: Effective for renovation and repair work where existing structures need to be reinforced or secured with a strong and reliable fastening solution.
Machinery and Equipment Assembly: Used in the assembly of machinery and equipment where a strong and durable fastening solution is required.
Quality Certification
Hebei Bentley is ISO9001:2015 certified and equipped with relevant certificates for quality assurance. Due to its specific dimensions and performance levels, it is suitable for a wide range of industrial and commercial scenarios including, but not limited to: machine building, construction work, transport, energy industry, timber frame connections.
Quality inspection
Bentley has invested a huge amount of money to builda product testing laboratory, equipped with importedhigh-end instruments:such as thread comprehensivescanners, high temperature tensile testing machines,high frequency fatigue testing machines, etc., to ensurethat all products are strictly tested before leaving thewarehouse to ensure the reliability of customers duringuse.