Cross large flat head self-tapping screws with a cushion drilling tail, often referred to as self-drilling screws, are designed for applications where a strong and secure connection is needed in materials such as metal sheets or construction materials. These screws feature a pointed end that facilitates the self-drilling process, and a large flat head that sits flush with the surface once installed.
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 allows the screw to drill into the material as it is driven in, eliminating the need for pre-drilled holes.
Large Flat Head: The large flat head provides a wide bearing surface, which helps prevent the material from sinking or cracking, especially in softer materials.
Cushion Effect: The "cushion" in the name suggests a design feature that may provide additional support or seating for the screw, enhancing its holding power.
Corrosion Resistance: Often coated with protective finishes like zinc plating or other treatments, these screws resist rust and corrosion, making them suitable for various environments.
Scope of Application
Metal Sheet Fastening: Ideal for fastening metal sheets in construction or industrial applications where a strong hold is required.
Construction: Used in construction projects for securing materials like formwork, safety barriers, and drywall tracks to concrete or metal structures.
Machinery and Equipment Assembly: Used in the assembly of machinery and equipment where a strong and durable fastening solution is needed.
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.
