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Rod screws needing replaced...help?

Author: Fuzzy
Date: 2018-04-06 03:54

So, a couple years ago, I was hooked up with a wonderful old hard rubber B&H Albert System bass clarinet. Life got terribly hectic, and I never finished repadding the instrument and getting it into top playing condition.

I'm trying to remedy that at this time. However, as I began to disassemble the instrument, it has become obvious that the rod screws have been heavily used over the years (by folks disassembling the instrument and such). Many of the screw heads are 90 percent "slot" and 10 percent metal. Meaning: The head of each screw is nearly worn out - some only have about .5 mm of slot depth, or are missing a side of the head's "slot". I gotta hand it to the previous owner, though - he kept all the rods oiled wonderfully, and all the screws come out just fine. However, a couple screws come out "too easily" - as in - the threads don't catch at all.

Using magnification, I can see at least the markings of threads in the post, but the screw just slides in and out. I'm not sure if the rod is simply cut/threaded incorrectly, or whether the posts have been stripped too far to accept a normal thread.

I don't have my own set of taps/dies, nor any rod stock. I'm unaware of any reputable repair folk in my area and wonder how I might figure out exactly what I might need to order (Like, if I could give dimensions to a repair person, who could then mail me the rod screws?) Or whether anyone has recommendations for a quality repair person in the Denver, Grand Junction, Salt Lake, Casper, etc. areas. (Anything in the Utah, Colorado, Wyoming, or western Nebraska areas?)

I own a standard (non-metric) set of calipers which go down to the thousandth of an inch, but I'm not sure if that would be good enough, or how I might determine the correct thread size/type/count. So, I think it would be best for me to take the instrument to someone.

Any thoughts or recommendations would be greatly appreciated. I'm hoping not to mail the instrument off, as we have terrible luck with shipping in this area.

Thanks!
Fuzzy

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