حلقات قفل داخلية مسننة 5/16 | ستانلس ستيل 410 (400 / عبوة)

The 410 stainless held up perfectly on my exhaust bracket—no rust after a month of rain, and they bit into the bolt head just enough to stay put. A full 400 pack means I’ll have spares for years, which is a solid deal for the price.

I’ve been using these #5 lock washers on a few small engine projects, and the internal teeth really bite into the bolt head to stop any loosening. The 410 stainless steel feels tough and corrosion-resistant, especially for damp conditions. For the price, getting 400 in a pack is a solid value—defini

The 410 stainless steel feels sturdy, and these lock washers held tight when I used them on a small motor mount. Only mild complaint is the package is a bit bulky for storage.