Simpson HD19 Bolted Holdown Anchor 24-1/2 in. 3-Gauge Steel Gray Paint APL/APT Straps The nibs beneath the head

The nibs beneath the head help the screw seat flush with or just below the surface of the decking

Length: 3 in

What size drill bit is required to install the EZAC50434 anchor

Abrasion-resistant Freud TiCo carbide with Perma-shield non-stick coating - resists the highly abrasive nature of fiber cement while protecting the blade from heat

The 37" working length is purpose-built for through-wall drilling and deep anchor applications that would require multiple passes or extensions with a shorter bit - this bit reaches the full depth in one setup

Simpson HD19 Bolted Holdown Anchor 24-1/2 in. 3-Gauge Steel Gray Paint APL/APT Straps The nibs beneath the headThe Simpson Strong Tie HD19 Bolted Hold Down Anchor is a high capacity, low deflection holdown engineered to develop high allowable loads in both vertical and horizontal applications within wood construction. Measuring 24 1 2 in. tall and 3 1 2 in. wide, the HD19 is installed with bolts directly into posts or columns, providing a secure, code compliant connection between structural framing and the foundation. Its self jigging design automatically