Fastenmaster FMTLOK10-50A 10 inch Timberlok Screw

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.