غسالات قفل أسنان داخلية M4 | فولاذ مطلي بالزنك (2000 / عبوة)

The zinc plating on these M4 washers looks clean and even, and they fit snugly into the recess of my vibration-prone assembly. Installed a batch yesterday and everything stayed tight after a full test run.

I keep a pack of these in my toolbox for when I'm tightening down brackets on a motorcycle, and they've held up well through two seasons of vibration without a single fastener backing out. The zinc coating is consistent and hasn't rusted after a few wet rides. For the price, you're getting a solid 2

The zinc plating looks uniform across all 2000 pieces, no bare spots or rust starting on any of them. Used a full bag securing motor mounts on a few projects and not a single washer deformed during torquing, which is exactly what I want from internal tooth washers under vibration.