براغي رأس مقبس M20-2.5 × 45 مم | رأس مسطح مع محرك سداسي | ملولبة بالكامل | فئة 12.9 من سبائك الصلب مع أكسيد أسود حراري (25 / عبوة)

I needed some high-strength fasteners for a jig I’m building, and these class 12.9 screws handled the torque beautifully. The fully threaded length made installation a breeze, and the hex drive grips tight without stripping.

The black oxide finish on these is flawless, and the hex socket drive seated perfectly on my torque wrench without any slippage during installation. For a Class 12.9 fastener at this price, the threading is surprisingly clean and consistent across all 25 pieces.

These arrived in a sturdy little package and the black oxide finish looks properly uniform across all 25. The hex socket drive seated cleanly on my Allen key, so threading them into my jig fixture felt solid without any wobble.