3/8-inch x 13 1/2-inch LOG Torx Star Drive Log and Timber Structural Screws, 50PK, Pwr Drive, Mfr#: FTC17BLK381312L

The PWR DRIVE LOG is designed to replace lag screws or giant nails in log home construction. They are also ideal for any other log or timber assemblies. The LOG is designed to ensure maximum squeezing power. All LOG screw have a thread length of 2 in for maximum assembly strength. The fixed thread is also an advantage and will help you assemble anything you may encounter on the jobsite. Each pack of the LOG includes the required T-40 tip.