Daggerz 1/4"-20" x 3-3/4" Phillips Flat Head Self Drill Screws with Wings - 500 Qty

The 1/4;-20 x 3-3/4; Phillips Flat Head Self Drill Screw with Wings SD4CTWW14334 is designed for efficient metal-to-wood fastening applications. Featuring a #4 self-drilling point and precision wings, this screw drills through metal cleanly while preventing wood thread engagement until penetration is complete. The flat head design delivers a flush finish, while the Dagger-Guard coating provides corrosion resistance up to 1000 hours of salt spray performance.

Winged Self-Drilling Design

Wings ream wood fibers during drilling, preventing premature thread engagement and ensuring tight, damage-free metal-to-wood connections.

#4 self-drilling point delivers quick, clean drilling through steel without pre-drilling.

Dagger-Guard coating provides up to 1000-hour salt spray protection for extended service life.

Phillips flat head seats cleanly for a smooth, professional finish in exposed applications.

SKU / Part Number: SD4CTWW14334

Product Name: Daggerz 1/4″-20 x 3-3/4″ Phillips Flat Head Self Drill Screw with Wings

Brand: Daggerz

Thread Size / Type: 1/4″-20 (Unified Inch Thread, 20 TPI)

Overall Length: 3-3/4″ (3.75″)

Drive Type: Phillips (#3)

Head Style: Flat Head (countersunk)

Point Type: Self-Drilling Point (#4 Drill Point)

Wings: Yes (wings to ream wood before drilling metal)

Material: Low Carbon Steel

Finish / Coating: Dagger-Guard Coating™ (corrosion-resistant)

Application: Wood-to-Metal fastening; plywood to metal studs/joists

Country of Origin: Taiwan

Typical Pack Quantity: Often sold in bulk packs (e.g., 500 pcs) depending on supplier