براغي ذات رأس مقبس M1.6-0.35 X 4mm | محرك سداسي داخلي | خيط كامل | فئة 12.9 سبيكة فولاذ أكسيد أسود حراري (600 / Pkg.)

The black oxide finish on these screws is perfectly even and looks great in my jig assembly. They threaded smoothly into the tapped holes without any binding, which I appreciated for such tiny fasteners.

Installed a few of these in a precision jig this morning and the hex socket drive held the driver perfectly without any cam-out. The 12.9 alloy steel feels rock solid at this small size, and getting 600 in one pack means I won't need to reorder for a long time.

The black oxide finish on these tiny screws is flawless and really helps them blend into my jig assembly. I appreciate how consistently the hex socket drives engage without any stripping. Perfect for tight precision work where standard screws are just too bulky.