Designed for use with steel or aluminum flexible-metal conduit, the 540-SS snap-in connector eliminates the need for lock nuts, ... Snap-In Connectors Reduce Conduit Installation Time. Nov. 9, 2004.

The MakerPipe connectors are exactly cheap, but considering the lower cost of the conduit there are some definite possibilities. The only thing cheaper that I can think of is 2x4s and screws ...

Rigid metal conduit — RMC (ferrous metal).RMC is a listed threaded metal raceway of circular cross section with a coupling, which can be either a standard straight tapped conduit coupling or the ...

Threadless couplings and connectors aren’t permitted to be used on threaded conduit ends, unless listed for the purpose. Running threads aren’t permitted for the connection of couplings, but they’re ...