Simpson Strong Tie ESA25 Simpson Strong-Tie Expansion Screw Anchor 1/4-inch Screw 7/8-inch Embeded Depth 100 per Box

The ESA was original internally threaded mechanical anchor design. The malleable lead shield allows for secure mounting. Installation Instructions: Drill a hole in the base material using the appropriate diameter carbide drill bit as specified in the table. Drill the hole to the specified embedment depth plus 1/8-inch for flush mounting. Blow the hole clean using compressed air. Overhead installations need not be blown clean. Insert anchor into hole. Using a piloted setting punch, drive expander shield over cone. Position fixture; insert fastener and tighten.