From: [EMAIL PROTECTED]
Can anyone help me? I have a B&W 5100 I need to take a part but, the knobs
do
not seem to be Allen screws. The last thing I want to do is damage the
fasteners. Are they Bristol or maybe U.S. standard screws or I'm mistaken
and they are Allen fasteners?
I had the same problem with a 75A-4. A previous owner evidently had tried
to use a regular Allen wrench to turn the spline screw. The result was a
rounded out hole in the head of the screw. I finally got it out by special
ordering a # 49 lefthand drill bit that just fit in the rounded out hole
enough that it would bite into the metal when the drill bit was manually
rotated. At first it did not want to move, until heat was carefully applied
using a homemade long tip on a soldering iron and a blob of heat sink
compound. I finally got it out, and found a replacement screw in my junkbox
- a plain flat slotted screw the proper size and thread pitch!
BTW, the proper term for these screws is BRISTO, not Bristol.
Bottom line: make sure you know exactly what kind of driver to use with
those screws before you attempt to turn them.
Don k4kyv
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