براغي تثبيت سداسية مقعرة M16 × 20 مم | فولاذ سبائكي (100 / عبوة)

Tightened a heavy-duty bracket on a lathe and the cup point bit into the steel surface perfectly, no slipping at all. The alloy steel feels solid and durable.

The hex socket drive made installation in that confined gearbox a breeze, and the cup point bites perfectly into the shaft. These screws held firm under a surprising amount of torque without stripping. Exactly what I needed for the job.

I needed these for a tight machinery repair where a standard socket screw wouldn't fit, and the hex drive made adjusting them in the confined space a breeze. The alloy steel feels rock-solid, too.