modified truss head self drilling screw
Drill and Fasten in One Step. Maximize Field Productivity.
Wide Bearing Surface Prevents Pull-Through in Thin Gauges.
Engineered for Exposed Applications. Superior Weathering Resistance.
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Self Drilling Truss Head Screws: The High-Performance Fastener for Metal Construction
Engineered by Sinsun. Our self-drilling truss head screws eliminate pre-drilling, prevent pull-through with a wide bearing surface, and feature superior corrosion-resistant coating. Request specs & bulk pricing for your project.
Get a Quick QouteThe best and most reliable way for professionals to fasten metal is:
If your projects involve fastening metal roofing, composite panels, or HVAC components to structural steel, you understand the bottlenecks: pre-drilling pilot holes consumes valuable labor time, standard screw heads can tear through thin substrates, and corrosion compromises long-term integrity.
Self Drilling Truss Head Screws are engineered to resolve these specific challenges in a single, robust fastener. This product combines three critical functions:
Self-Drilling Point:
Eliminates the need for a separate pre-drilling operation, significantly speeding up installation.
Truss Head Design:
Provides a wider bearing surface than a standard pan head, distributing clamp force to prevent pull-through in thin-gauge metal and to better accommodate sealing washers.
Engineered Material & Coatings:
Formulated for consistent driving performance and long-term resistance to environmental exposure.
Designed for the rigors of commercial metal building erection, architectural cladding, and mechanical trades, this screw is built for speed, strength, and durability.
Get a Quick Qoutetruss head self drilling screw of Design Features & Performance Advantages
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Optimized Truss Head Geometry:
The low-profile, wide-diameter head is engineered for high clamp force without sinkage. Its design offers a larger surface area than a pan head, effectively securing flexible materials like thin metal sheets, plastic trim, and composite panels without tearing or deformation. The shape also provides an excellent seat for attached sealing washers, ensuring a uniform compression seal against water ingress.
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High-Performance Drill Point:
Our screws feature a consistent, heat-treated drill point that acts as a pilot drill and tap. The flute design efficiently evacuates metal cuttings, preventing point binding and allowing for faster driving speeds. This results in consistent penetration depth and reduced operator fatigue over hundreds of cycles.
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Advanced Thread & Shank Design:
A sharp, high-angled thread form ensures rapid driving and high ultimate pull-out values. The fully threaded shank provides maximum thread engagement in the base material, while the specific thread pitch is calibrated to balance drive speed with holding power in steel and aluminum substrates.
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Corrosion Protection System:
We offer a tiered coating system to match your environmental demands. Our high-performance,Geomet coating provides exceptional corrosion resistance through a non-electrolytic, lubricated layer of inorganic matrix, ideal for industrial and coastal environments. For architectural applications,PVDF coatings offer superior color retention and weather resistance.
Why Get Your Supplies From Us?
Consistent Quality and Performance:
We control the manufacturing process so that every batch meets exact dimensional and mechanical standards. This reduces driver bit wear and failures on the job site.
Technical Help and Support for Choosing:
Our team has worked in the field. We can help you choose the right point, length, and finish for your substrate and the environment it will be in.
Professional manufacturer
We can handle large orders with reliable lead times because we are a specialist manufacturer. You can choose from different lengths, coatings, and washer configurations.
Total Cost Efficiency:
The unit price is competitive, but the real value is in the lower total installed cost. Faster installation, fewer rejected fasteners, and long-term reliability all mean lower project costs.
Professional Installation Guidelines
STEP 01
Tool Setup:
Use a variable-speed drill/driver or dedicated screw gun. Set the clutch to prevent over-driving and washer damage.
STEP 02
Correct Alignment:
Hold the tool perpendicular to the work surface to ensure the drill point engages properly and the washer seals evenly.
STEP 03
Speed & Feed:
Apply firm, consistent pressure and allow the drill point to work at full RPM. Let the screw pull itself into the material; do not excessive lean on the tool.
STEP 04
Washer Engagement:
Drive the screw until the washer is fully compressed and forms a continuous seal around the shank. Avoid under-driving or crushing the washer.
Q: When should I choose a Truss Head over a Hex Washer Head?
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A: Choose a Truss Head when fastening into thin-gauge materials (<22ga) or non-metallic composites where a wider bearing surface is needed to prevent pull-through or distortion. Choose a Hex Washer Head for applications requiring very high clamp force on thicker materials, as it accepts more torque without cam-out.
Q: Is a sealing washer always necessary?
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A: For exterior building envelope applications (roofing, siding), a sealing washer is mandatory to create a water-tight seal. For interior mechanical or structural connections, it is often omitted.
Q: How do I select the correct drill point size (#3, #4, #5)?
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A: Match the point to the total thickness of the steel you need to penetrate. A #3 point is for light gauge (up to 10ga). A #4 point is the industry standard for most roofing/siding (panel + purlin). A #5 point is for penetrating thick structural elements (e.g., into a 1/4" steel beam).
Q: Can these be used with impact drivers?
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A: Yes, but with caution. Use a high-quality impact-rated bit (especially in Torx or Pozidriv) and be mindful of the clutch setting. Excessive torque from an impact driver can easily over-drive the screw, damage the washer, or strip the drive.
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