1/2 in. x 3 in. Galvanized GR2 Lag Screw

The 1/2 in. x 3 in. Galvanized GR2 Lag Screw is a course thread self-tapping screw driven with a wrench instead of a screwdriver. Lag screws are primarily designed to be screwed into wood.

A lag screw, known in the UK as a coach screw, is a sturdy screw often with an externally driven square or hex drive head. It features coarse threads and a tapered point. It’s typically much more heavy-duty than conventional wood screws that are fitted with slotted or Pozidriv heads. Lag screws have thick shafts and coarse threads to firmly grip wood boards, studs, and similar pieces. Use hex head lag screws and other wood screws to securely join wood pieces. Commonly usually used to connect heavy lumber or other heavy materials that are bearing an intense load. 13 thread count.