براغي تثبيت ذات رأس سداسي نقطة مخروطية M4×16mm | فولاذ سبائكي (250/عبوة)

Used these on a small robotics project, and the hex socket drive made them easy to tighten in cramped spots. The cone point really locks into place without slipping.

These things are solid, the hex socket drive let me get them properly torqued down in a really awkward spot on my jig. A full pack of 250 means I've got spares for whatever else comes up, and the cone point seats nicely every time.

These set screws are perfect for fastening into corners where you don't have much room to work. I used them to secure a steel bracket and the cone point really bit in nicely without slipping.