براغي رأس أسطوانية M6-1 × 30 مم | محرك سداسي | ملولبة بالكامل | فولاذ سبائكي فئة 12.9 بأكسيد أسود حراري (400 / عبوة)

The hex socket drive bites cleanly without any cam-out, which matters when you're tightening dozens of these into a tooling plate. The 12.9 alloy steel feels rigid and the black oxide finish is uniform across all 400 pieces.

Used a handful already on a jig fixture, and the hex socket drive made installation quick even in tight spots. The 12.9 alloy steel feels solid for the price, and the 400-count pack will last me through several projects.

The black oxide finish is a nice touch for a hardware component—gives them a clean, uniform look right out of the box. Threads were consistent across all 400 pieces, which made setting up my jig a breeze. Exactly what I needed for a precision assembly project.