براغي ذات رأس تجويف سداسي M10-1.5 X 25mm | محرك تجويف سداسي | رقعة نايلون | ملولبة بالكامل | فئة 12.9 فولاذ سبائكي مؤكسد أسود حراريًا (300/عبوة)

I needed some strong fasteners for a jig I’m building, and these 12.9 alloy steel screws have held up perfectly during repeated adjustments. The black oxide finish gives them a nice, even look and seems to resist minor scuffs.

The nylon patch on these screws holds them securely in place during assembly, which saved me a lot of time on a jig project. The black oxide finish looks clean and professional, and the 12.9 hardness feels tough even under heavy clamping load.

I’ve used these on a few precision assemblies and the black oxide finish looks sharp while the nylon patch keeps them locked in place under vibration. The hex socket drive grabs cleanly every time, and at 300 pieces per pack I won’t need to reorder for a while.