براغي رأس كبس M3-0.5 × 40 مم | رأس مسطح مع محرك سداسي | ملولبة بالكامل | ستانلس ستيل 316 (400/عبوة)

Needed a full batch of corrosion-resistant fasteners for a saltwater robotics project—these 316 stainless hex drive screws are holding up perfectly where standard ones would rust. The threads are sharp and consistent across all 400 pieces, which saved me time on cleanup.

Finally got around to mounting these on a custom jig I've been building, and the 316 stainless holds up much better than the zinc-plated ones I used before. The full threading on 40mm length is perfect for clamping two different thicknesses of aluminum plate securely.

The hex socket drive grabs perfectly, no stripping even when torquing down on these 316 stainless screws. Used a full bag for a marine jig project and every single one threaded cleanly without any binding.