M3 中型開口彈簧墊圈 | 18-8 不鏽鋼 黑色氧化 (5000個/包)

I work on electronics that get jostled around, and these M3 washers have kept everything tight through months of vibration. The black oxide finish on the 18-8 stainless steel adds a nice touch without any rust concerns.

The black oxide finish looks even better in person than in the photos, and the 18-8 stainless gives me confidence they won't corrode in my shop. All 5000 arrived neatly packed and the sizing is spot-on for M3 bolts—these will hold up fine under the vibration on my drone builds.

Bag held up fine through shipping, and these washers are exactly as described—the 18-8 stainless with black oxide finish looks clean and uniform across all five thousand. I’ve used a handful on a vibration-prone assembly and they’ve stayed put so far, which is really all you can ask for.