I recently obtained a Kovea Spider and I noticed that the threads that attache to the fuel canister are anodized aluminum. The only other stove I have with aluminum threads is a first generation JetBoil Sol Ti. The majority of my stoves have a brass thread insert which appears to be press fit into aluminum. I have heard of a brass thread insert pulling out of an Olicamp Xcelerator remote canister stove rendering it useless. John Abela told of the aluminum threads in one of his Jetboils wearing down to the point that the stove was useless. It make me wonder which thread material is preferable in a canister stove. I suppose brass is preferable unless the insert fails out, but does that happen very often, I don't know.
