Truss Head Self-Drilling Screws

Truss Head Self-Drilling Screws feature a wide, low-profile head designed to provide a larger bearing area than many conventional screw head designs.

They are mainly used for light sheet metal assembly, and can also be used for suitable timber, plasterboard, home decoration, and outdoor applications.

SANN MUO manufactures customized Truss Head Self-Drilling Screws in carbon steel, alloy steel, and stainless steel with different sizes, drilling points, coatings, and washer configurations.

Truss Head Self-Drilling Screw Specifications

What Is a Truss Head Self-Drilling Screw?

A Truss Head Self-Drilling Screw is a self-drilling and self-tapping fastener featuring a wide, low-profile head.

The wider head creates a larger contact area against the material compared with narrower head designs.

This makes Truss Head screws useful when the application requires:

• Larger bearing area
• Wider surface contact
• Lower head profile
• Self-drilling installation
• Light sheet metal assembly

Main Features of Truss Head Self-Drilling Screws

Wide Head Design

The defining characteristic of a Truss Head Self-Drilling Screw is its wide head.

The larger head diameter provides increased surface coverage around the fastening point.

This can be useful when the material requires greater load distribution around the screw head.

Low-Profile Head

Although the head is wider, the profile is relatively low.

This provides a combination of:

Wide Bearing Area + Low Head Profile

This is one of the primary reasons customers may select Truss Head screws instead of conventional Pan Head screws.

Self-Drilling and Self-Tapping

The self-drilling point allows the screw to drill through suitable materials while the thread creates the mating connection.

The basic installation sequence is:

Drill → Penetrate → Tap → Fasten

This can simplify installation and improve assembly efficiency in suitable applications.

Truss Head Self-Drilling Screw Applications

Light Sheet Metal Assembly

The primary application is light sheet metal assembly.

Typical applications include:

• Light-gauge sheet metal
• Metal panels
• Thin metal components
• Building materials
• General light metal assembly

Timber and Board Applications

Truss Head Self-Drilling Screws can also be considered for suitable timber and board applications where a wider head is beneficial.

Potential applications include:

• Timber panels
• Plasterboard
• Home decoration
• Interior panels
• General board assembly

The exact screw specification should be selected according to the material and required holding performance.

Outdoor and Roofing Applications

For outdoor applications, the screw can be supplied with suitable corrosion-resistant materials or coatings.

A washer can also be added when sealing is required.

Available washer configurations include:

• EPDM Washer
• Steel Bonded Washer
• Customized Washer

Truss Head vs. Pan Head vs. Bugle/Round Head

Which One Should You Choose?

Choose Truss Head when a larger bearing area is important.

Choose Pan Head for general-purpose rounded-head fastening.

Choose Bugle/Round Head when a particular rounded or bugle-style head profile is required.

Material and Size Options

SANN MUO manufactures Truss Head Self-Drilling Screws in:

• Stainless Steel 304
• Stainless Steel 316
• Stainless Steel 410
• Carbon Steel 1022
• Carbon Steel 1018
• Alloy Steel 10B21
• Alloy Steel 10B33

Available diameter:

#8 – #14

M4 – M6.3

Available length:

1/2" – 10"

12 – 250 mm

Coating and Surface Treatment

SANN MUO can provide:

• C1
• C2
• C3
• C4
• Customized coating specifications

Coating selection should be based on:

• Indoor or outdoor use
• Humidity
• Corrosion exposure
• Required service life
• Customer specifications

Washer Options for Truss Head Self-Drilling Screws

Depending on the application, Truss Head Self-Drilling Screws can be supplied with:

• EPDM Washer
• Steel Bonded Washer
• Customized Washer

For roofing and exterior panel applications, the washer selection should consider both sealing requirements and environmental exposure.

Custom Truss Head Self-Drilling Screws

SANN MUO can customize:

• Head diameter
• Head height
• Screw diameter
• Screw length
• Thread
• Drilling point
• Material
• Coating
• Washer
• Surface finish
• Special specifications

Customers can provide an existing sample or drawing for evaluation.

FAQ About Truss Head Self-Drilling Screws

Q. What is a Truss Head Self-Drilling Screw?

A Truss Head Self-Drilling Screw is a self-drilling and self-tapping screw featuring a wide, low-profile head designed to provide a larger bearing area.

Q. What are Truss Head Self-Drilling Screws used for?

They are mainly used for light sheet metal assembly and can also be used for suitable timber, plasterboard, home decoration, and outdoor applications.

Q. What is the advantage of a Truss Head compared with a Pan Head?

The main difference is the head geometry.

A Truss Head generally provides a wider head and larger bearing area, while a Pan Head provides a more conventional rounded head profile.

Q. Can Truss Head SDS be used for roofing?

Yes, depending on the roofing application.

When sealing is required, the screw can be combined with an appropriate EPDM or steel bonded washer.

Q. What materials are available?

Available materials include:

• Stainless Steel 304
• Stainless Steel 316
• Stainless Steel 410
• Carbon Steel 1022
• Carbon Steel 1018
• Alloy Steel 10B21
• Alloy Steel 10B33

Q. Can the Truss Head screw be customized?

Yes. SANN MUO can customize the head, dimensions, thread, drilling point, material, coating, washer, and other specifications.

Q. Can SANN MUO develop a second-source product?

Yes.

Customers can provide an existing screw sample or technical drawing, and SANN MUO can evaluate the specification for customized manufacturing and second-source development.