Q: We are looking for screws to hold down electronic circuit boards. Unfortunately the mounting provisions need to be electrically isolated from the mounts. In addition,  we need strength, non-conductivity, and impact resistance, even at cold temperatures (-40C).

A:  A great material to consider would be PEEK screws or PEEK with Glass Fiber reinforcement.  These PEEK fasteners are very strong and tough polymers that will be non-conductive.  You could learn more information about these fasteners at the following link.

Q: We are attaching steel to aluminum in a drainage pond application, and need to prevent electrolysis. The aluminum materials are degrading prematurely. Is there a non-conductive bolt that would work for this situation?

A: Your best bet is if you can use a polymer bolt like PEEK. PEEK bolts are non-conductive and strong providing 16,000 psi of ultimate tensile strength which should work with your aluminum pontoons. They also won’t degrade in pond water and could be used to isolate the steel and aluminum to avoid the galvanic corrosion you are experiencing.

Q: Looking to change to a non-conductive material for use in a high
impact application. Would Alumina or Zirconia ceramic fasteners be a good fit?

A: We could certainly quote you some ceramic hardware, however ceramics may not be the best non-conductive choice for a high impact environment.  Ceramic fasteners are generally strong but brittle. This makes them susceptible to failure from impacts.

Depending on the temperatures in your application, you might want to consider a polymer like PEEK screws.  Glass fiber re-inforced PEEK screws offer nearly double the strength of natural PEEK.  A polymer fastener like PEEK will be much tougher than ceramics and will still offer non-conductivity. In addition, PEEK is a VERY stable polymer and is creep resistant, depending on the temperature you are operating at.