حلقات قفل عالية الياقة مقاس 1/4 بوصة | فولاذ بأكسيد أسود (4000 / عبوة)

I needed a bulk pack for rebuilding a shaky assembly line fixture, and these 4000 washers are perfect. The black oxide coating looks even and should hold up well against moisture in the shop.

Black oxide finish on these washers resists corrosion nicely, and the 1/4-inch high-collar design gripped my bolt securely during a heavy-duty assembly test. The full box of 4000 will stock my workbench for a long time—definitely got my money’s worth here.

Box of 4000 is exactly what my shop needed, and the steel feels solid under the thumb. I've torqued a few test joints with them and the black oxide finish hasn't flaked or rusted after a week in a damp garage.