I need some threaded bushes making up similar to these but in mild steel http://www.kayautomatics.com/threaded-bush-298539.html they need to be 70mm long, 45mm diametre for the first 40mm of their length then turned down to 34.5mm diametre for the remainder and drilled and threaded internally, i still need to check what the thread needs to be but it would be something like m27, is anyone here able to help me?