Zinc plated outer hexagonal drilling tail screws, as defined by standards such as DIN 7504K, are a type of self-drilling screw with a hexagonal head and a drilling point that allows for easy installation into various materials without pre-drilling.
Stainless Steel (304/316): Offers superior corrosion resistance and is suitable for moist or corrosive environments. The 316 grade has additional molybdenum, providing even better corrosion resistance, especially in marine applications.
Carbon Steel: Provides good strength and is the most common material for bolts. It may require additional surface treatments like galvanizing for increased corrosion resistance.
Alloy Steel: Offers enhanced strength and durability. It is often used in high-stress applications where high tensile strength is required.
Advantage:
Self-Drilling Capability: The drilling tail enables the screw to bore into materials as it is driven in, eliminating the need for separate drilling and tapping processes.
Hexagonal Head: Provides a large bearing surface for better torque transfer and reduces the risk of the tool slipping during installation.
Zinc Plated: Offers corrosion resistance, which is beneficial for outdoor applications or in environments where moisture is present.
Extended Length: Designed for use in applications where extra length is needed to reach through multiple layers or into deeper substrates.
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.
Without auxiliary processing, and can be drilled, tapped and locked directly on the setting materials and foundation material, greatly saving the construction time. They have high pulling force and maintenance force, and will not loosen for a long time after combination.
When to use tapping screws, when to use tapping and drilling screws?1. Tapping screws are used for the connection between thin metal plate (steel plate, saw plate, etc.). When connecting, first make the threaded bottom hole of the connecting piece, and then screw the tapping screw into the threaded bottom hole of the connecting piece. Due to the high hardness of the threaded surface of the tapping screw (≥45HRC), internal threads can be tapped into the threaded bottom hole of the connecting piece to form a connection.2. Self-drilling and tapping screw can be directly in the setting material, basic material drilling, tapping, locking one-time fast completion, can quickly automatic drilling and directly screw fixed; The construction efficiency of self-drilling and tapping screws is very high; It saves the construction time to the maximum extent, improves the construction efficiency and improves the economic benefits of the boss. Self-drilling and tapping screw riveted connector has strong binding force, high preload force and high stability of the connector.
