M8-1.25 X 16mm 內六角平頭螺絲 | 平頭六角驅動 | 全螺紋 | 316不鏽鋼（200 / 包）

Used a full bag of these on a marine railing repair and the 316 stainless held up perfectly against the salt spray. The flat head design sits flush in the countersink, which gives the joint a clean, professional look.

I used these on a marine ladder repair and the 316 stainless is holding up perfectly against saltwater spray after a month. The flat head sits flush enough that I didn't need to countersink anything.

The hex socket drive on these grabbed my wrench perfectly with zero stripping, and the 316 stainless finish on the full threading is exactly what my jig needed for coastal shop humidity. I’ve only used eight so far, but the other 192 in the package are already sorted and ready for the next build.