براغي رأس كبس بمقبس سداسي M6-1 × 12 مم | محرك مقبس سداسي | كامل الخيط | فولاذ سبائكي درجة 12.9 مؤكسد أسود حراريًا (900 / عبوة)

I needed a bulk pack for building jigs, and these M6 x 12mm screws have perfect thread consistency across all 900 pieces. The hex socket drive takes an Allen key without any stripping.

The black oxide finish gives them a nice uniform look, and the hex socket drive seated perfectly with my Allen key. I used a handful for a tooling fixture and every single one threaded cleanly without any binding.

Installed these in a jig for a prototype run and every single screw threaded smoothly without any galling. The black oxide finish held up well against the coolant mist, which was a nice surprise for a budget fastener.