مسامير ماكينة M4-0.7 × 25 مم | رأس مقبب، محرك فيليبس | فولاذ مقاوم للصدأ 316 (400 / العبوة)

Used a handful of these for a small boat repair, and the 316 stainless held up perfectly after a week submerged in salt water. The pan head sits flush with the wood, and the Phillips drive didn't strip. Exactly what I needed for a harsh environment.

Finally got around to replacing some old rusty deck screws with these M4 stainless ones. The 25mm length is perfect for our marine plywood, and they’re totally non-magnetic, which I tested.

I’ve been looking for a stainless screw that doesn’t rust near the coast, and these M4-0.7s are spot on—the 316 grade is noticeably tougher than the usual 304. The pan head seats flush without stripping, and the 25mm length is perfect for my outdoor hardware.