براغي ضبط رأس كوب M4 × 12mm بنقطة كوب | فولاذ مقاوم للصدأ 316 (500 / عبوة)

Installed these on a marine hatch where corrosion is a constant battle, and the 316 stainless is holding up perfectly. The hex drive lets me torque them down tight without stripping.

Used these to secure a jig fixture where the cup point really bites into the part for a solid lock. The 316 stainless is noticeably tougher than the zinc-plated stuff I usually have, and the hex socket held up fine without stripping.

The hex socket drive worked perfectly for tightening in a cramped spot under the deck. After a month of coastal weather, none of these 316 stainless screws have shown any rust spots.