Daggerz™ 12-24" x 2" Star Flat Head Self Drill Screws with Wings, #4 Point, Dagger-Guard Coating - 2000 Qty
100% Satisfaction Guaranteed
We'll exchange or refund any product that doesn't meet your expectations.
100% Satisfaction Guaranteed
We'll exchange or refund any product that doesn't meet your expectations.
The Daggerz™ 12-24 x 2" Star Flat Head Self Drill Screws with Wings SD4CTWWST1220 are engineered for demanding wood-to-metal fastening applications. Featuring a #4 self-drilling point and innovative wing design, these screws eliminate pre-drilling while preventing wood jacking during installation. The wings ream out the wood before breaking away upon contact with steel, allowing the threads to engage securely. Manufactured from C1022 low carbon steel, the screws feature a T-27 Star drive for superior torque transfer and Dagger Ultra-Guard Coating™ that provides up to 1,000 hours of salt spray resistance and compatibility with ACQ-treated lumber. Each carton contains 2,000 screws.
The wings enlarge the hole in the wood before the threads engage, preventing the wood from lifting or "jacking" away from the metal substrate. Once the wings reach the steel, they break off so the threads can securely fasten the materials together.
The T-27 Star drive provides better torque transfer and reduces cam-out during installation. This helps installers drive screws faster and with less bit wear.
Yes, the Dagger Ultra-Guard Coating™ is approved for use with ACQ-treated lumber. The coating offers enhanced protection against corrosion in treated wood environments.
The #4 self-drilling point can drill through steel up to 0.375 inches thick. This makes it suitable for structural steel and heavy-duty metal framing applications.
These screws are commonly used for attaching plywood, decking, subfloors, and wood panels to steel framing. They are popular in commercial construction, post-frame buildings, and industrial fabrication projects.