We've been asked many times over the years what is ASSY? ASSY is an acronym representing the high tech asymmetrical thread of our ASSY Log & Timber Screws. The asymmetrical thread reduces the needed torque when inserting the screw and prevents the screw from backing out. But that's not the only benefit or difference when comparing ASSY Log & Timber Screws to most other log Screws, Lag Screws, or Timber Screws. Each screw if fitted with the patented AW-Drive that offers the most comfortable, safest, and most solid screw bit for any professional. The AW-Drive has 6 cylindrical power application points for higher power transmission and the AW-Bit and AW-Drive are both tapered for excellent contact with out tumbling, allowing for increased torque.