براغي رأس أسطوانية H16-2 × 50mm من HOLO-KROME 87216 | محرك سداسي مسطح الرأس | فولاد سبائكي مع أسود حراري (25 / عبوة)

I needed some heavy-duty fasteners for a jig I was building, and these M16 socket cap screws fit perfectly with no wobble. The flat head sits flush and the thermal black oxide coating handles a little oil on the shop floor without rusting.

The black oxide finish on these screws held up perfectly during assembly without any galling. I used them for mounting a small fixture plate, and the flat head sits flush just like I needed.

Installed these into a jig for a custom tooling project and the flat head sits perfectly flush every time. The black oxide finish feels durable and hasn't shown any wear after tightening them down.