Which method of connecting extrusions should be used?

Assembly Instructions:

1. Insert the assembled anchor fastener into the T-slot.
2. Set the mating extrusion 90 to the joining slot. Be sure the counterbore is oriented properly.
3. Slide the anchor fastener into the counterbore of the mating extrusion.
4. Be sure the extrusions are squared up. Line up the grooves in the extrusions.
5. Tighten the anchor fastener with a 1/4" "T" Handle Ball End Hex Wrench.

Assembly Instructions:

1. Set the clip on the end of the extrusion over the tapped hole.
   
2. Place the bolt through the clip and thread into the tapped hole.
3. Slide the bottom T-slot onto the clip of the mating extrusion.
4. Line up the access hole up with the head of the bolt.
5. Tighten the end fastener with a 3/16" "T" Handle Ball End Hex Wrench.

Assembly Instructions:

1. Drop barrel into counterbore.
2. Insert "T" bar w/ spring into extrusion hole and hole in barrel.
3. Insert set screw and begin tightening until slight tension is on the "T" bar.
4. Place head of the "T" anchor into the mating extrusion.
5. Once the extrusion is in place, tighten the set screw.

Assembly Instructions:

1. Slide connector body into T-slot.
2. Insert nut into opposite extrusion and
   tighten to join extrusions.
   
3. Tighten set screw into connector body.