Fastenmaster Timberlok 4 In. Countersunk Hex Washer Structure Screw (50 Ct.)

No pre-drilling. Countersinking head style. Heat-treated for increased strength. Heavy-duty threads for holding power. Easily removable. The OMG TimberLok is engineered to drive right through pressure treated beams. For best results use a 1/2" high torque, low RPM power drill. 5/16" hex drive bit included.

• Installs in a fraction of the time versus traditional lag bolts with fewer steps and less effort
• Its sharp point and aggressive threads zip right into the densest woods
• Tested and supported by engineering data that conforms to the most current ICC standards and is also approved for use in ACQ or treated lumber