براغي رأس كبسولية M4-0.7 × 6 مم | محرك سداسي داخلي | ملولبة بالكامل | فئة 12.9 سبيكة فولاذ مؤكسد أسود حراريًا (600/عبوة)

These are perfect for the jig I’m building; the hex socket drive lets me get them tight in tight spots without stripping. The class 12.9 alloy steel feels seriously strong, and the black oxide finish wiped clean of oil right out of the box. For six hundred pieces at this quality, it’s a solid buy.

Used these in a jig I was building and the threads cut clean every single time—no stripped holes. The black oxide finish looks sharp and so far not a single one has rusted after a week in a damp shop. Six hundred pieces is a lifetime supply for my projects, and at this price it's a no-brainer.

Finally got around to swapping out some worn screws on my jig fixtures and these M4s fit perfectly. The black oxide finish looks clean and the hex socket drive didn't strip at all during tightening.