براغي رأس أسطواني بمقبس سداسي M6-1 × 20 مم | محرك مقبس سداسي | ملولبة بالكامل | فولاذ سبائكي فئة 8.8 بأكسيد أسود حراري (600 / عبوة)

Used these in a jig I built for a production run and the black oxide finish held up perfectly with no galling. The hex socket drive made them quick to install even in tight spots.

Was a little worried about the thread quality on a bulk pack, but every single one of these M6 screws threaded smoothly into my steel jig plate. The hex socket drive felt precise and the black oxide coating looks professional.

The black oxide finish on these screws really helps them resist rust in my damp workshop. The hex socket drive grips perfectly with my T-handle Allen wrench, so I can torque them exactly where needed. For precision assemblies, this bulk pack is exactly what I needed.