Daggerz 1/4"-20 x 3-1/4" Self-Drilling Metal Screw W/Wings, Phillips Flat Head - Zinc, Qty. 900 Channel Brackets The Simpson Strong-Tie Quik Drive

The Simpson Strong-Tie Quik Drive extension connects to the compatible attachments to meet the needs of a variety of applications including drywall to subfloor installation

Grade 55 Steel Strength: Provides increased yield and tensile strength for heavy-duty applications

Temperature rating: Rated for up to 500°F with a continuous rating of 437°F

650" washer head - distributes load and resists pull-through on heavy timber

Daggerz 1/4"-20 x 3-1/4" Self-Drilling Metal Screw W/Wings, Phillips Flat Head - Zinc, Qty. 900 Channel Brackets The Simpson Strong-Tie Quik DriveThe Daggerz Self Drilling Metal Screw with Wings is engineered for reliable fastening where wood meets steel. Its unique winged design creates a clearance hole through wood before snapping off at the metal surface, preventing wood splitting and ensuring smooth engagement with steel. The flat head provides a flush, finished look, while the #3 phillips drive delivers strong engagement for easy driving and reduced cam out. Finished with Dagger Guard