حلقات قفل متوسطة مقاس #4 | فولاذ مطلي بالنيكل (5000 / عبوة)

Got these for a vibration-prone mount on my lathe and they’ve held tight through a dozen runs—the nickel plating also makes them easy to spot during assembly. For 5,000 pieces, the price per washer is unbeatable.

Bought these for a small robotics project where vibrations are a real issue, and the split lock design on these #4 washers seems to do its job perfectly. 5000 pieces is a lot to get through, but the nickel plating looks even and they haven't caused any corrosion so far.

The nickel plating gives these a clean, uniform finish that resists rust better than the plain steel ones I've used before. Five thousand pieces in one package means I won't be running out anytime soon, and they've held tight on my workbench projects so far.