Studs & Nuts, M6 (3" Lathe Chucks)

The threads are cut clean and the hardened steel really holds up—no galling after a dozen chuck swaps on my lathe. These are an easy upgrade over the softer stock bolts.

I use these for swapping chucks on my mini lathe, and the hardened threads are holding up way better than the originals after dozens of changes. They seat snugly without binding, which was my main gripe before.

The hardened steel really makes a difference—the stock studs on my lathe stripped within a month, so this set feels like a proper upgrade. Threads meshed cleanly with my M6 chuck, no wobble or binding. Honestly, worth the few extra bucks to not deal with that headache again.