Hex lag screws are the best in the industry with six sided heads. A lot of bolts including ASTM A307 Grade A bolts and SAE hex bolts require a standard hex head. As far as specifications such as A307 grade B, A490 and A325 that require a heavy hex pattern is concerned, referring dimensional tolerances for structural bolts and/or heavy hex bolts is an ideal solution.
Diameters: 1/2″ – 3/4″
Lengths: 18″ maximum
Finish: Plain and hot-dip galvanized
Standard Thread Length
The minimum thread length shall be equal to one-half the nominal screw length plus 1/2″ or 6”, whichever is less. One should consider longer than standard thread lengths for lag screws which are extremely long.