1/4″ ZAC® Lap Panel Self-Drill Screw, HWH (3/8″)
Product: 1/4″ ZAC® Lap Panel Self-Drill Screw, HWH (3/8″).
Size: 7/8″.
Product Type: Self-Drilling Screw.
Material: Carbon Steel.
Diameter: 1/4″ (6.17 mm).
Threads Per Inch: 14.
Head Style: Cupped Hex Washer Head.
Drive Socket: 3/8″ Hex.
Washer: Cut Washer EPDM.
Drill Point: SD1.
Drill Capacity:
0.030″ – 0.095″.
0.762 mm – 2.413 mm.
Head Cap: ZAC Zinc Aluminum Capped.
Application: Panel to panel side lap, end lap, and other stitch applications.
Features & Benefits:
Zinc alloy cap head designed to resist red rust.
Self-drill point for fast installation.
Assembled EPDM sealing washer for a consistent weather-tight seal.
Long life fastener limited warranty.
Installation Information:
Use a 0–2000 RPM screw gun equipped with depth sensing nose piece.
Composite thickness should not exceed 0.095″ (2.4 mm).
Impact guns and hammer drills are not recommended.














