In article , Gary
writes
The TV is a plasma (35kg), and I'm recessing the bolt into the hole. The
bolt is 135mm so I drill a hole 125mm deep, the sleeve sits way back in the
hole and the actual bolt then petrudes the full 135mm from the back of the
hole giving approx 10mm I can attach the nut to. Is this correct.

No, the front end of the sleeve should be flush with the wall, you
should drill the hole to the depth of the sleeve only (plus a little
bit). When you tighten it up, the bolt will pull out of the sleeve
(opening it up and fixing it) so you'll end up with a lot more bolt
sticking out. If the protruding bolt is a problem, cut it off with an
angle grinder after fixing.
--
Tim Mitchell