Truss Head Self-Drilling Screw

Product Parameter

Truss Head Structural Advantages

The core advantage of Truss Head Self-Drilling Screws is the optimized large-diameter truss head structure. Different from small pan head or countersunk head screws, the extended washer-type bearing surface distributes locking pressure evenly over the workpiece surface. It effectively avoids common construction defects such as thin steel plate sinking, edge cracking and coating peeling during tightening. The smooth round head has no sharp corners, protecting the surface finish of color steel plates and decorative panels. Combined with integrated drill tail structure, it eliminates pre-drilling procedures, greatly improving on-site installation efficiency while maintaining flat, tidy and high-quality assembly results.

High-Strength Material & Environmental Adaptability

These truss head drilling screws are manufactured from strictly selected industrial-grade raw materials. Carbon steel versions adopt overall quenching heat treatment, ensuring the drill tail maintains ultra-high hardness for fast and smooth penetration on steel plates without tip passivation or breakage. 304 and 316 stainless steel options provide excellent oxidation resistance, salt spray resistance and moisture corrosion resistance, perfectly adapting to outdoor open-air, coastal and high-humidity harsh environments. Multiple surface plating and coating treatments further strengthen surface durability, preventing rust and aging during long-term outdoor service.

Precision Manufacturing & Strict Quality Control

All products adopt integrated cold heading and precision thread rolling technology. The threads are full, uniform and accurately pitched, forming tight meshing fit with metal substrates to provide strong clamping force and superior anti-vibration and anti-loosening performance. The drill tail is precisely die-formed with standard cutting angle and sharp cutting edge, ensuring stable drilling speed and accurate hole positioning. Every production batch undergoes strict sampling tests, including hardness detection, drilling penetration test, tensile strength test and appearance inspection. Defective products with burrs, deformed threads or unqualified drill tails are completely eliminated to guarantee stable batch consistency.

Standard Installation Guidelines & Precautions

Truss Head Self-Drilling Screws are suitable for metal-to-metal fastening. Match the screw specification according to actual steel plate thickness and load requirements. Use a matched electric screwdriver or impact driver during installation, keep the screw perpendicular to the workpiece surface, and apply steady feeding pressure to complete drilling and locking naturally. Avoid excessive torque and violent pressing to prevent plate deformation or drill tail fracture. Stop tightening when the truss head fits closely against the surface to achieve optimal locking effect and flat appearance.

Batch Supply & Customized Solutions

We maintain sufficient stock for all standard truss head self-drilling screw sizes to support fast sample delivery and bulk engineering orders. Customized non-standard lengths, special thread parameters and enhanced surface anti-corrosion treatments are available for special working conditions. Complete material certificates and inspection test reports can be provided for project acceptance and foreign trade clearance. Support OEM laser marking and export-grade moisture-proof packaging, with stable long-term batch supply capacity for steel structure engineering, hardware distributors and equipment manufacturing industries.