براغي رأس أسطوانية M18 × 130 مم | محرك سداسي | فولاذ سبائكي فئة 12.9 (40 / عبوة)

The hex socket drive engaged perfectly with my allen wrench, no stripping or slipping at all. These 12.9 alloy steel screws feel incredibly solid for the jig I'm building.

Used a full pack on a heavy jig build and every single screw threaded smoothly from start to finish. The 12.9 alloy steel feels noticeably harder than standard hardware I’ve used in the past.

Finally a set of socket cap screws that actually feel like Class 12.9 alloy steel should—tight threads and zero wobble in the jig setup I used them for. The hex drive seated perfectly with my Allen key, and the 40-pack covers a couple of projects without leftovers.