Self Drilling Screw

● Sinsun 304/316 stainless steel construction provides superior corrosion resistance, making these screws ideal for coastal applications and harsh environments where aluminum meets moisture.

● The sharp self-drilling point eliminates pilot holes while the continuous thread design ensures strong engagement, allowing screws to form perfect mating threads in aluminum sheets and extrusions in one operation.

● Choose between our specialized Spoon Point for clean threads in soft aluminum alloys, or robust bi-metal points for tougher applications - we provide the right point geometry for your specific aluminum grade and thickness.

● Sinsun TEK Screws for Wood: Drive Direct, No Pilot Hole

● Our blunt-tip design pushes wood fibers aside instead of cutting them, creating a tighter grip that won't split your lumber. These screws tap their own thread as they drive straight through 3cm wood into 2mm steel framing in one continuous motion.

● Built with C1022A carbon steel and anti-corrosion coating that withstands 500+ hours of salt spray testing, they're made to last in outdoor conditions. The special thread geometry reduces driving torque by about 30% compared to standard wood screws.

● Available in pan, flat, and wafer head styles to match your project needs. From deck frames to wood-metal structures, get secure fastening without the prep work.

● Our hardened drill points (#2 to #5) cut through steel from 0.5mm to 12mm thick without pre-drilling. The optimized flute design clears metal chips.

● The specially angled threads provide 30% better pull-out resistance than standard screws, while our reinforced neck design prevents breakage even when driven at 15-degree angles. This ensures reliable performance in structural steel connections and metal framing.

● our tek metal screwsHRC 45-50 hardness rating, these screws deliver proven durability in harsh environments. Available with zinc plating or Gevin coating for enhanced corrosion protection.

● Our roof screws feature hardened drill bits of 3-5, penetrating steel roofs in under 3 seconds. Equipped with EPDM washers, they compress to form a watertight seal. We can also color-coat the heads to match different roof colors.

● The bearing surface beneath the washer head is widened by 60%, preventing metal deformation while maintaining stable clamping force. The optimized thread design requires only 2-3 turns to tighten the sheet, halving installation time compared to traditional methods.

● These screws range in length from 19mm to 152mm to match various purlin thicknesses, making them ideal for vertical joint roofs, corrugated steel sheets, and solar installation systems requiring high weather resistance.

● Our self drilling screws for plastic feature a unique blunt point design that displaces material instead of cutting it, reducing crack risk by 80% in brittle plastics. The wide-spaced threads with 30° flank angle provide maximum engagement in soft materials from 2mm to 12mm thick.

● The low-drive torque design prevents overtightening, while the deep thread profile delivers 40% better pull-out resistance than standard fine threads. This combination ensures secure fastening in PVC, polycarbonate, and fiberglass applications.

● Available in pan and round head styles, these screws install 30% faster than traditional tapping screws in plastic fabrication, electrical enclosures, and composite panel installations where material integrity is critical.

● Sinsun's trailer deck screws feature a modified drill tip that cuts through 3mm steel crossmembers without walking or binding. The #3 drill point maintains its edge even when driving through pressure-treated lumber, eliminating the two-step process of drilling then fastening.

● We use high-tensile steel with a Ruspert coating that withstands 1000+ hours of salt spray testing. The special thread design provides 30% higher pull-out resistance compared to standard deck screws, crucial for withstanding road vibration and load shifts.

● Choose from large-flange washer heads or hex washer heads, both providing a 14mm bearing surface to prevent wood sinking