M5-0.8 x 16mm 內六角螺絲 | 低頭內六角驅動 | 全牙 | 18/8不鏽鋼 (400入)

The hex socket drive seats the Allen key perfectly with no wobble, and the low head profile clears tight clearances on my jig. Threads ran smooth through 18/8 stainless plates without binding.

I needed exactly these 16mm low-profile screws for a jig I'm building, and the fully threaded 18/8 stainless steel feels sturdy and precise. The hex socket drove nicely without any stripping, and I appreciate they come in a practical 400-pack. Exactly what I expected for machinery work.

The hex socket on these was perfectly clean, no burrs or stripped corners. I used them for a small machinery guard and every single one threaded in smooth. For stainless at this price per piece, they're a great value.