براغي رأس أسطواني M12-1.25 × 50 مم | محرك سداسي داخلي | ملولبة بالكامل | فولاذ سبائكي فئة 12.9 مطلي بالزنك (50 / عبوة)

Used them for a quick jig build in the shop and the 12.9 alloy steel feels rock solid, especially the zinc plating which hasn't chipped at all so far. The fully threaded length made fine adjustments easy without any binding.

The hex socket drive grips perfectly with my Allen key, making installation into a jig frame quick and without stripping. These M12x50mm bolts feel robust and the zinc coating looks like it will resist rust well.

Used a few of these to repair a heavy-duty jig at work and the hex socket drive made torquing them down painless. The 12.9 alloy steel feels way stronger than the usual hardware store stuff.