Anyone make the fine threaded base cross screws? I have a 20X ST that has A bend in it,hard to screw out,wont hit the base scallop right so will bugger up scallop if I tighten it.Thankyou,Pete

Screw holes good Dave.....

I hope this doesn't end up hijacking this thread, but rkba2nd's comment raised a long-time unresolved question for me:  How do you straighten a screw without damaging the threads?

Bill Lawrence

Measure the thread then buy the nuts from McMaster Carr. Best source I know obscure threads.

I would straighten with the arbor press. 3 Nuts, on ends and the high spot in small tool makers vise. Rotate & indicate high spot with a dial indicator & true using a very light touch.

No different than truing a large shaft just small.

Boats

Is this the screw you need?
Dave

Boats solution is the same I have used many times to get myself out of a bind, if you will. I have, over many years, accumulated a large collection of taps. I use brass rod and drill and tap and proceed as boats laid out. The brass precludes most , if not all thread damage, and has worked well for me when it was the most expedient if not the best way to salvage a part. For a replacement, you might try Parson's, or one of the screw makers, or, as skalkaho mentioned, possibly Steve Earle.

11/16" shank. Maybe 18-20 years ago I got ahold of the guy that bought out Unertl and bought a couple cross screws for my then Unertls that all were bent . Seems to be the one Achilles heel with these scopes when picking them up.....