Hex Washer Head Self-Drilling Screws

Hex Washer Head Self-Drilling Screws are designed for fastening metal sheets, steel framing and roofing components. Featuring a hexagonal washer head and an integrated drill point, these screws combine drilling and fastening in one operation, eliminating the need for pre-drilling in suitable metal thicknesses.

The hex washer head provides a wide bearing surface and allows convenient installation with suitable socket drivers. The self-drilling point is available in different sizes to accommodate various metal thicknesses and fastening requirements.

Manufactured from carbon steel or stainless steel, these screws are available with different surface finishes, including zinc plating, hot-dip galvanizing and Ruspert coating.

Optional bonded sealing washers are also available for roofing applications requiring additional weather-resistant sealing.

1. Hex Washer Head Design

The hexagonal washer head provides a wide bearing surface and helps distribute clamping force over the fastening area. Its external hex drive allows efficient installation with matching socket tools.

2. Integrated Self-Drilling Point

The drill point is designed to penetrate suitable metal materials without pre-drilling, combining drilling and fastening into one installation process.

3. Multiple Drill Point Options

Available in different drill point sizes, including #1, #2, #3, #4, #5 and #6, to accommodate different material thicknesses and installation requirements.

4. Strong Thread Engagement

The thread design helps provide effective engagement with metal substrates, supporting reliable fastening and pull-out performance.

5. Multiple Material Options

Available in carbon steel and stainless steel grades 304, 316 and 410 to meet different application requirements.

6. Various Surface Finishes

Available with white zinc plating, yellow zinc plating, hot-dip galvanizing and Ruspert coating, depending on the selected specification.

7. Optional Sealing Washer

Available with bonded EPDM or neoprene sealing washers to help create a weather-resistant seal between the fastener and the installation surface.

Hex Washer Head Self-Drilling Screws are suitable for a variety of metal fastening and construction applications.

Typical applications include:

- Metal roofing sheet installation.
- Roof deck fastening to steel framing.
- Metal roof panel sidelap connections.
- Roofing accessories fastening to steel framing.
- Residential steel frame construction.
- Brick ties to steel framing.
- Metal sheet and steel structure assembly.
- Roofing and building maintenance projects.

Drilling Capacity & Performance

Different drill point sizes are available to match different metal thicknesses.

According to the supplied product specifications:

- **#2 Drill Point:** Suitable for approximately 1.0–2.0 mm material thickness in specified models.
- **#3 Drill Point:** Suitable for approximately 1.0–3.0 mm or 2.0–4.0 mm material thickness, depending on the model.
- **Larger Drill Points:** #4, #5 and #6 are available for applications requiring higher drilling capacity.

For medium-duty applications, the #12 (M5.5) and #14 (M6.3) sizes are specified for drilling capacities of approximately 5.0–6.0 mm in the supplied product chart.

Selecting the correct drill point according to the metal thickness is essential for efficient installation and reliable fastening.

Sealing Washer Options

For roofing and exterior fastening applications, Hex Washer Head Self-Drilling Screws can be supplied with bonded sealing washers.

The bonded EPDM or neoprene washer helps create a weather-resistant seal around the fastening point, reducing the risk of water penetration.

Different washer configurations and colors can be selected according to project requirements.

Why Choose Our Hex Washer Head Self-Drilling Screws?

Hex washer head self-drilling screws combine efficient drilling performance, strong fastening capability and versatile product configurations.

With multiple diameters, drill point sizes, materials and surface finishes available, they can accommodate different roofing, metal fabrication and construction applications.

Our product range is suitable for roofing contractors, metal fabricators, construction material distributors, fastener wholesalers and international importers.

B2B Supply & Customization

We supply hex washer head self-drilling screws for international B2B customers, including importers, distributors, wholesalers and construction hardware suppliers.

Available options include:

- Different screw diameters and lengths.
- Multiple drill point sizes (#1–#6).
- Carbon steel and stainless steel materials.
- White zinc and yellow zinc plating.
- Hot-dip galvanized and Ruspert finishes.
- EPDM and neoprene bonded sealing washers.
- Different washer colors and configurations.
- Bulk packaging and custom