HOLO-KROME 87008 M3-0.5×10mm 內六角圓柱頭螺絲 | 平頭六角驅動 | 合金鋼熱黑氧化物 (100個/包)

I needed a few extra M3 screws for a robotics prototype, and these 10mm socket caps with the black oxide coating fit perfectly without any binding. They’re the right length for my mounting brackets and the hex drive makes tightening much easier than a slotted head.

Installing these in a tight jig assembly was a breeze—the hex socket drive gave me great torque control without stripping. They fit perfectly into pre-tapped M3 holes and the black oxide finish adds a nice, professional look.

The black oxide finish on these M3 screws gives them a nice uniform look, and they thread cleanly into my precision assemblies without any binding. I've used them for tooling fixtures and they hold up well, the flat head sits flush like it should.