E-TrackRail Installation Your E-Track tie-down system needs a sound installation to be the reliable cargo anchor it is. Use these hex bolts to fasten your E-Track rail to a metal truck's floor or wall and you can be certain of the dependability of your cargo restraints. E-TrackMounting Fasteners - 10 Pack This E-Track fastener pack comes with 10 bolts, nuts, and washers. The bolts are six-sided hex bolts with a diameter of 1/4" and a length of 2". These hex fasteners are also available as a fastener pack with 1.5" long bolts. These fasteners are made of durable steel that can tolerate rough elements and heavy use for year and they are protected from corrosion and rust by zinc coating. Using Hex Bolts, Nuts, And Washers For E-TrackInstallation These hex head bolts can be fastened manually with a wrench or with a screwdriver or drill, using a 7/16" diameter drive. They can be removed the same way. To install, place the bolt through the hole on the E-Track and through the hole in the metal surface. Fasten the nut on the other side of the surface. The washer helps distribute the pressure of the nut to prevent damage to the vehicle and keep the nut tight. Thread the washer on the bolt before or after sliding it through the holes.