براغي رأس كبسولة M4-0.7 × 35 مم | محرك سداسي | خيط جزئي | فولاد سبيكي فئة 12.9 مؤكسد أسود حراري (400 / عبوة)

Used a full pack on a custom jig for the shop, and every single one threaded cleanly into tapped holes without any binding. The partially threaded shank is perfect for clamping applications where you need a shoulder.

The black oxide finish on these screws is impressively uniform, and the hex socket drive fits my Allen wrench perfectly without any wobble. Each one threaded smoothly into the aluminum plate I'm using for a precision assembly fixture.

Used these for a custom jig I was building and the 12.9 alloy steel felt noticeably tougher than the standard hardware I’ve used before. The partially threaded section made alignment a breeze during assembly.