WB1630113.8, 5/8 x 30mm x 4.482, Water Pump Bearing with Keyway and Threads

The threads are 1/2-20. Key end fits 5/8 V-belt pulleys well. Can be used as an arbor for many types of machines. Price is ridiculously low at $3.69.Just ordered 2 more. The picture shows it in one of the possible mountings. This one is for lapidary (rock cutting). Note: A rust inhibitor is used in the water bath, much the same as in antifreeze. You can lead a horse to water, but you can't make him think.

Rust outdoor