براغي رأس أسطوانية M2.5-0.45 × 6 مم | رأس مسطحة بمحرك سداسي | ملولبة بالكامل | فولاذ سبائكي فئة 12.9 بأكسيد أسود حراري (600 / عبوة)

These little black-oxide screws worked perfectly for a precision jig I’m building—the hex socket drive grabbed firmly with my 2mm Allen key, and all 600 pieces came in a sturdy box I’ll reuse for other hardware. Class 12.9 alloy steel feels solid in hand, and at this price per unit, I won’t stress a

Exactly what I needed for mounting circuit boards in a tight jig setup. The black oxide finish on these 12.9 alloy screws looks quality and the hex socket drive grips well without stripping.

I needed these for a small jig I was assembling, and the flat hex socket drive made installation a breeze. The black oxide coating also seems tough enough to handle repeat adjustments.