Topband: Conductivity of stainless steel hardware

[Charles Stackhouse]

I have been building antenna hardware such as transmitting chokes, Beverage transformers, etc. in various plastic boxes. The electrical connections have been to solder lugs fastened inside the boxes to stainless hardware. The actual antenna wires have been connected outside the boxes to the stainless hardware such as eyebolts or bolts with wingnuts. 

A very tech savvy friend (microwaves, public safety radio) says this is no good. Due to the poor 
conductivity of stainless steel, RF connections should not be through the hardware but through wires brought out of the boxes soldered directly to the antenna wires. 

I would appreciated the advice of this group.

Charlie, W2GN