The Daggerz ACQ Dagger Square Drive Exterior Wood Screw is designed for wood-to-wood fastening in exterior applications, including ACQ pressure-treated lumber. Manufactured from C1022 low carbon steel, it features Dagger Ultra-Guard Coating, a multi-step zinc/chromate and proprietary organic coating system that provides 1,000-hour salt spray corrosion resistance for long-lasting performance in demanding outdoor environments.

The Type 17 point provides fast starts and efficient penetration into wood, while the flat head allows the screw to countersink cleanly for a flush finished appearance. The square drive provides positive bit engagement during installation and helps reduce cam-out compared to conventional drive styles.

Key Features

Designed for exterior wood-to-wood applications
Recommended for use with ACQ pressure-treated lumber
C1022 low carbon steel construction
Dagger Ultra-Guard Coating provides 1,000-hour salt spray corrosion resistance
Type 17 point provides fast starts and efficient penetration into wood
Flat head provides a clean, countersunk finished appearance
Square drive provides positive bit engagement and helps reduce cam-out
Core hardness: HV240-425
Meets or exceeds applicable ASME B18.6.1, ASTM A510, ASTM B117, and ASTM F1941 specifications