براغي رأس مقبس M6-1 × 90 مم | رأس مسطح محرك سداسي | ملولبة جزئيًا | فولاذ سبائكي فئة 12.9 مطلي بالزنك (100 / عبوة)

The flat head sits flush perfectly in my jig setup, and the hex socket gives a solid grip without stripping. The partial threading saved me time on alignment.

The 12.9 alloy steel feels seriously solid for the price, and the zinc plating has a nice even finish that should hold up in my jig setup. I've used about thirty of these for a custom fixture build, and every single one threaded in clean without any binding or stripped heads.

Used a handful to mount a jig on my mill, and the Class 12.9 strength is exactly what I needed for tight clamping. The zinc plating looks even and the partial thread gave me just the right grip length.