Not necessarily a DEC thing. TEMPEST PC's (and
other TEMPEST boxes like
fiber
ethernet transceivers) also had screw connectors rather than the spring
clip ones.
It's semi-common on random old stuff, yeah. I've got a Cisco IGS that uses
jackscrews, and have had a pretty good number of ISA Ethernet boards that use either
jackscrews in the usual D-SUB location, or the really wide-set ones that like two
transceivers fit.
For the Cisco IGS, there's a part # for an adapter cable with jackscrews on the router
end and slide latches on the transceiver end, but they rarely show up. I have one or two
for it, but have not found more.
Protip: Ungermann-Bass made jackscrew transceivers both ways (wide and standard) and
they're usually cheap.
Thanks,
Jonathan