HOLO-KROME 76304 M10-1.5 X 30mm 內六角螺絲 | 六角驅動 | 合金鋼熱處理黑色氧化 (100 / 包)

The black oxide finish on these screws gives them a nice uniform look, and the hex drive seated perfectly with my tooling setup. They tightened evenly into the jig without any binding. Exactly the quality I was hoping for in a batch of fasteners.

I needed a batch of solid M10 cap screws for a machinery repair, and the black oxide finish on these gives just enough corrosion protection for my shop floor. No stripped heads after torquing them down, which is exactly what I was hoping for.

Machined a few fixture plates this weekend and the socket heads seated perfectly with a hex key, no stripping or wobble. The black oxide coating looks uniform and should hold up fine in the shop. These are exactly what I needed for precision assemblies.