Permatex 84209 PermaPoxy 4 Minute Multi-Metal Epoxy
The big issue with metal epoxies is the tensile strength of the cured adhesive and that's why I picked Permatex SteelWeld as the number one metal epoxy for this list. This product provides an amazing 4500 PSI of tensile strength once fully cured. This is actually a two-part epoxy, packaged in a twin-tube plunger which makes this product quite easy to work with as the plunger ensures equal parts of the epoxy are dispensed for mixing. It is a very fast-acting adhesive, giving you only four minutes of work time with a full cure taking hold in 24 hours. The cured adhesive can be drilled, sanded, or threaded in addition to also having excellent gap-filling capability.