Hex Flange Head Self Drilling Screw

This series of hexagonal flange head screws is a one-stop integrated fastening solution specifically designed for metal sheet and roofing projects. It combines the functions of drilling, tapping, locking and waterproofing in a single unit. There is no need to drill holes in advance. It can directly penetrate steel plates, color steel sheets, aluminum profiles and other substrates to complete the fixation. The product covers three main versions: 304 stainless steel model, carbon steel with Dacromet/Zinc coating model， and carbon steel colored zinc model. It is equipped with the standard EPDM (Three-Component Ethylene Propylene Diene Monomer) waterproof rubber pad. During installation， waterproof sealing can be completed simultaneously， addressing the roof leakage hidden danger of traditional fixation methods at its root. It is the core fastening component that balances efficiency， strength and waterproofing in steel structure and color steel sheet roofing projects.

Self-Drilling and Tapping: The sharp, hardened tip and cutting edges of the screw allow for drilling and tapping in one operation, eliminating the need for pre-drilling or tapping, which saves time and labor.

Hex Flange Head: The hexagonal flange head provides a large bearing surface, which helps to prevent the roofing material from being crushed or damaged during installation. It also allows for easy tightening with a hex key or wrench.

Durable Material: Constructed from high-strength steel, these screws are designed to resist corrosion and withstand the test of time, ensuring long-lasting performance in various weather conditions.

Hex Key Drive: The hex key drive provides a secure and precise tightening mechanism, ensuring a strong grip and reducing the risk of over-tightening or stripping.

Weather Resistance: Often coated with a corrosion-resistant finish such as zinc plating, galvanization, or a specialized coating, these screws are built to resist rust and other forms of degradation.

Wide Application: Suitable for a variety of roofing materials and types, including but not limited to metal roofing, asphalt shingles, and wood shakes.

Metal Roofing Installation

Asphalt Shingle Attachment

Wood Shake Roofing

Roof Vent and Flashing Securement

Solar Panel Mounting on Roofs

Installation without pre-drilling, complete process in one step

Equipped with hardened drill tail tip, with high hardness and low cutting resistance, it can directly penetrate metal sheets, without the need for pre-drilling and tapping. One-step installation is completed, with efficiency increased by over 60% compared to traditional screws, especially suitable for batch steel structure construction scenarios.

Integrated waterproof rubber pad design, eliminating leakage risks

Standardized EPDM (Ethylene Propylene Diene Monomer) three-component rubber waterproof pad is installed along with the tightening action, compressing and sealing to seal the gap between the screw and the sheet, eliminating the need for additional waterproof coating or installation of waterproof sheets, ensuring the waterproof performance of the roof project from the root.

Three material options, precise adaptation for all working conditions

Stainless steel model: native salt spray resistance and corrosion resistance, suitable for coastal and outdoor humid environments, not afraid of salt spray and acid-base corrosion;

Carbon steel Dacromet model: high corrosion resistance, suitable for industrial high-humidity and heavy corrosion conditions;

Carbon steel painted zinc model: high cost performance, excellent rust prevention, is the preferred choice for regular indoor and outdoor conditions, no need for additional customization to cover different needs.

Hexagonal flange surface design, convenient installation and anti-slip

Hexagonal flange surface is compatible with regular sockets / wrenches, with uniform torque transmission, not prone to slipping or twisting, single person can quickly complete the installation, suitable for automated assembly lines and manual tightening operations; the flange surface increases the contact area, disperses the tightening pressure, avoiding damaging the sheet surface.

Hardened drill tail + precise thread, stable connection and anti-loosening

The drill tail tip is specially hardened, not prone to breaking or wearing, suitable for high-strength sheets; the thread adopts CNC rolling process, with regular tooth shape and tight engagement, after tightening, it is not prone to slipping or loosening, maintaining stable locking force even under long-term wind vibration conditions.

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.