Carbon Steel Blue Zinc Plated Galvanize Cross Drive Wafer Head Self-Drilling Screws

This series of cross-shaped large flat-head screw tail bolts are specially designed for metal sheets, color steel tiles, and profiles. They offer an integrated fastening solution that combines drilling, tapping, and locking, eliminating the need for pre-drilling. They can directly penetrate the metal substrate to complete the fixation. The screws feature a combination design of a cross-shaped large flat head, hardened drill tail tip, and self-tapping threads. The large flat head comes with an integrated flange surface, ensuring a large contact area after installation, without damaging the surface of the workpiece. At the same time, it also has anti-slip and anti-loosening effects.

The main body of the product is made of carbon steel, and the surface is treated with blue-white zinc / color zinc passivation. The coating is uniform and shiny, with excellent rust prevention and corrosion resistance properties. The drill tail tip undergoes special heat treatment to be hardened, with high hardness and low cutting resistance. It can directly penetrate steel plates up to 0.5-5mm thick, suitable for various metal sheet connections. It is an efficient and convenient core fastener in sheet metal processing and steel structure installation.

• The carbon steel construction provides sufficient strength to handle the stresses encountered in various fastening situations.
• The wafer head design allows the screw to sit relatively flat against the surface, which can be beneficial for both aesthetic and functional reasons in certain applications.
• The self - drilling capability of the screw point simplifies installation and saves time, especially when working with materials that would otherwise require pre - drilling.
• The selected coating helps protect the screw from corrosion, extending its useful life and maintaining its performance over time in different environmental conditions.

Widely used in construction, manufacturing, and DIY projects for fastening metal sheets, attaching components in HVAC systems, securing brackets and supports, and other similar applications where a strong, reliable fastener is needed

No-drilling installation, one-step process completed

Equipped with hardened drill tail tip, it can directly penetrate metal sheets without the need for pre-drilling and tapping. One-step installation is achieved, with efficiency increased by over 60% compared to ordinary screws, significantly reducing labor and time costs. It is suitable for batch production and on-site construction scenarios.

Large flat head flange design, preventing damage and slipping

The integrated large flat head flange increases the contact area with the workpiece, dispersing the tightening pressure and avoiding damage to the sheet surface. At the same time, the flange surface can prevent the screws from slipping or sinking, ensuring a high installation fit and not affecting the subsequent assembly or appearance of the workpiece.

High hardness drill tail tip, strong penetration and不易break

The drill tail tip is hardened through heat treatment， with high hardness and good toughness. It can easily penetrate metal sheets， has low cutting resistance， and is smooth and unobstructed when screwed in， making it easy to use for long-term use without breaking or wearing out， meeting the installation requirements for high-strength sheet materials.

Galvanized anti-rust treatment， suitable for multiple working conditions

The surface is treated with blue-white zinc / color zinc passivation， forming a uniform and dense protective layer， with excellent rust prevention and corrosion resistance. It is not affected by workshop oil stains or outdoor humid environments， prolonging the product's service life and reducing the cost of later maintenance and replacement.

Cross drive + precise thread， convenient installation， stable engagement

The cross slot is compatible with regular screwdrivers / electric screwdrivers， with uniform torque transmission， not prone to slipping or warping， and can be quickly completed by one person； self-tapping threads are processed by precise rolling， with sharp teeth and tight engagement， not prone to loosening or falling off during long-term use， ensuring the reliability of the connection.

Q:What types of fasteners do you manufacture or supply?

A:We offer a comprehensive range of fasteners including bolts, screws, nuts, washers, anchors, and specialty fastening products in various materials and finishes.

Q:Do you provide custom fasteners for specific applications?

A: Yes, we specialize in manufacturing custom fasteners tailored to customer specifications, including unique sizes, materials, and coatings.

Q:Can you supply fasteners with specific surface treatments?

A:We offer surface treatments like zinc plating, hot-dip galvanizing, black oxide coating, and powder coating to meet different corrosion resistance and aesthetic requirements.

Q:What is your minimum order quantity (MOQ) for custom fasteners?

A:Our MOQ varies depending on the fastener type and customization requirements. We can discuss your specific needs to provide a personalized quote.