براغي رأس مقبس M10-1.5 × 15mm | محرك مقبس سداسي | خيط كامل | فولاد سبيكة فئة 12.9 مطلي بالزنك (100 / عبوة)

I was nervous about threading these into a steel jig, but they cut cleanly without galling. The 12.9 alloy hardness is definitely noticeable compared to cheaper socket caps I've used.

The hex socket drive seated perfectly on my wrench without any wobble, and the 12.9 alloy steel feels rock solid for my tooling fixtures. These are exactly the right length for my precision assemblies, and the zinc coating looks clean and even across all 100 pieces.

I needed these for some jig repairs on my CNC mill, and the 12.9 alloy steel feels way more rigid than the standard hardware store stuff. The zinc plating is smooth and looks consistent across all 100 pieces.