Ah yes! Screw-on BNCs. The joys of thin ethernet.
"Why's the network died?" "Someone's kicked their network cable."
Such an exchange was ususally followed by a scramble under the desks looking for the loose cable segment.
The crimp-on BNCs weren't much better. Often the crimps didn't last under rough handling. How we rejoiced when we moved everything to
10BaseT.