براغي رأس أسطوانية M4-0.7 X 16mm | محرك سداسي داخلي | ملولبة بالكامل | فولاذ مقاوم للصدأ 316 (400 / عبوة)

I needed some corrosion-resistant fasteners for a marine jig I'm building, and the 316 stainless steel on these is exactly what I was after. The hex socket drive engages perfectly with my driver, and I'm impressed with how clean and uniform the threads are on every single screw in the 400-count pack

The threads are clean and consistent across all 400 pieces, and the 316 stainless finish feels solid for outdoor jig work. I've used nearly half a box on a marine fixture build and not one has stripped or corroded yet.

The hex drive seated perfectly without stripping on my precision tooling setup — these 316 stainless screws are noticeably tougher than standard ones. Exactly the corrosion resistance I needed for a damp workshop environment.