SLEEVE TYPE; STEEL MATERIAL; ZINC PLATED FINISH; 2-1/4 INCH ANCHOR LENGTH; 0.375 INCH THREAD LENGTH; 24 TPI; 1/4 INCH DRILL SIZE; ACORN NUT HEAD TYPE; 1/4 INCH ANCHOR SIZE; 1.375 INCH EMBED DEPTH; HEAD DIAMETER 0.618 INCH; THREAD TYPE 2A EXTERNAL THREAD