Truss Head Washer Self-tapping Screws

Truss Head Washer Self-tapping Screws - Wide Bearing Surface for Sheet Material Fastening

Product Features

• Truss head with integrated washer: Provides an enlarged bearing surface that helps distribute load evenly, reducing the risk of pull-through when fastening thin metal, plastic, or composite sheets.
• Self-tapping thread design: Enables direct fastening into metal or rigid substrates without pre-drilling, supporting efficient installation in assembly-line and on-site applications.
• Material and surface options: Available in carbon steel or stainless steel, with finishes such as zinc plating or passivation to support corrosion resistance requirements in different environments.

Product Description

Truss Head Washer Self-tapping Screws are manufactured in accordance with commonly used international fastener standards, ensuring dimensional consistency and thread accuracy. The combined truss head and washer structure is designed to improve contact area and clamping stability, which is particularly relevant for applications involving thin-gauge materials. These self-tapping screws for sheet metal fastening are produced with controlled thread geometry to support reliable cutting performance and consistent torque during installation. Optional material grades and surface treatments allow alignment with industry requirements for mechanical strength, corrosion resistance, and long-term service behavior.

Application Areas

This product is suitable for the following scenarios:

• Sheet metal to metal fastening in HVAC ducts, electrical enclosures, and light steel framing
• Plastic or composite panel assembly where wide load distribution is required
• Automotive interior components and appliance housings
• General industrial assembly using self-tapping screws with washer head

FAQ

1. Can truss head washer self-tapping screws be used without pre-drilling?

In most applications, these screws are designed for direct installation without pre-drilling when used on thin metal sheets or compatible substrates. For thicker or harder materials, a pilot hole may be recommended to control installation torque and ensure proper thread engagement.

2. How does a truss head washer screw differ from a standard pan head self-tapping screw?

Compared to a standard pan head, the truss head with integrated washer offers a larger contact area. This helps reduce surface deformation and improves load distribution, making it more suitable for fastening thin materials or applications where pull-through resistance is a concern.

3. What corrosion resistance options are available for outdoor or humid environments?

For applications exposed to moisture or mild outdoor conditions, zinc-plated or passivated finishes are commonly used. In environments with higher corrosion risk, stainless steel self-tapping screws with washer head are often specified to support longer service life and reduced maintenance.