Daggerz 1/4"-20 x 2-3/4" Self-Drilling Metal Screw W/Wings, Phillips Flat Head - Zinc, Qty. 1,000 Simpson Quik Drive Replacement Parts Minimum thread engagement should be

Minimum thread engagement should be equal to the nominal diameter of the threaded insert

The PROSDDD25K combo system includes-

The versatile Simpson Strong-Tie THJA26 can accommodate right- or left-hand hips (at 45° skews)

The #5 Round Silicone Metal Roof Pipe Boot with Install Kit is a complete solution for sealing pipe penetrations on metal roofs

Daggerz 1/4"-20 x 2-3/4" Self-Drilling Metal Screw W/Wings, Phillips Flat Head - Zinc, Qty. 1,000 Simpson Quik Drive Replacement Parts Minimum thread engagement should beThe 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