8102-A-0440-16 | فواصل سداسية Amatom #4-40 × 1/4 بوصة | ألومنيوم (100/عبوة)

Threading was clean on all 100 pieces, so my panel mounted flush without any cross-threading. The aluminum feels sturdy enough for a few board stacks, and the 1/4" length fit my spacing perfectly.

I needed a small standoff for a tight PCB mount, and these quarter-inch hex pieces fit perfectly—the aluminum finish feels solid, not flimsy. Used all 100 on a single project without a single stripped thread.

The threads cut cleanly on every one of the hundred, and the aluminum finish has a nice, uniform look that's perfect for holding a small PCB off the panel. I used about thirty of them for a prototype board stack and didn't have a single bad piece in the batch.