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Truss Head Self Tapping Screw

Truss head self tapping screw is a specialized fastener designed for self-drilling and fastening thin metal sheets, plastic panels, wooden boards and light building materials. It features a large rounded truss head and sharp self-tapping threads, widely applied in electrical equipment assembly, furniture installation, metal sheet engineering, interior decoration and mechanical fixture fixing.
Material: Carbon steel (1018/1022) or stainless steel (SUS304, SUS410)
Specifications: diameter: 2.2mm – 6.0mm; length: 6mm – 120mm
Head: Truss head (Phillips / Torx drive)
Thread: Sharp self-tapping single thread / fine thread optional
Surface Finishes: Black phosphate, bright zinc plating, blue-white zinc plating, yellow zinc plating (custom anti-rust and salt spray resistance available)
Here are some advantages to using Truss Head Self Tapping Screw
Wide truss head provides larger compression area, effectively prevents workpiece sinking and deformation. Sharp self-tapping thread design enables automatic tapping and drilling, no pre-drilling required, saving construction time. Excellent fastening and locking performance, firm connection without loose deviation. Versatile compatibility for multiple materials, suitable for light load assembly scenarios. Smooth surface coating offers good corrosion resistance and aesthetic appearance, reduces tool wear during installation.

Installation Instructions

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  1. Mark screw positions on the mounting surface.
  2. No pre-drilling required for wood, plastic and thin soft metal.
  3. Drive vertically at steady speed with consistent light pressure.
  4. Drive until truss head sits flush – do not over-tighten to avoid panel damage.
  5. Clear debris and check firmness.

Specification Standards

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Item No. Thread
Size
Max Head Diameter(dk) Max Head Thickness (k) Phillips Drive No. Available Length Range
TS- 18001 ST2.2 4.93 1.4 No.1 6 – 32
TS- 18002 ST2.9 6.3 1.6 No.1 6 – 50
TS- 18003 ST3.5 7.8 1.9 No.2 6 – 75
TS- 18004 ST4.2 9.2 2.2 No.2 10 – 80
TS- 18005 ST4.8 10.6 2.6 No.2 12 – 90
TS- 18006 ST5.5 12.2 3.0 No.3 16 – 100
TS- 18007 ST6.3 13.8 3.4 No.3 16 – 100

Application

For wood, plastic, composite boards & thin soft metals. Widely applied in furniture, decoration and electrical fitting installation.

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