03-08-2018, 10:13 AM
I would not trust epoxy in that application. The screw just prevents the endcap sliding off. The screw can be as small as you like - It wouldn't shear off. I think that I would epoxy the endcap on and then put a 3mm screw or rivet into the wet epoxy. It wouldn't matter that the screw did not engage the threads as it is in shear (But a very light load). Out of preference I would use one of those "Liquid Metal" epoxys