Lots of sources given for s.s. hardware but little on how to tell if
the stuff is dependable. Before I retired, I worked for a DOE
contractor and I recall there was a lot of concern over sourcing
quality metal parts. A lot of money can be wasted if inferior
hardware is used, or worse, serious injury in some cases. So, there
was training. Here's a manual they used:
https://www.energy.gov/sites/prod/files/2014/06/f16/SCI_Training_Manual.pdf
73
Rob
K5UJ
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