M4-0.7 × 30mm براغي ذات رأس سداسي | فولاذ من الفئة 8.8 مطلي بالزنك | ملولبة جزئيًا (500/عبوة)

Zinc plating on these M4 bolts held up great during assembly — no chipping even with a socket wrench. The partial threading made alignment in my press fixture much easier than fully threaded screws.

Worked perfectly for a jig I built to hold aluminum parts on the mill table, and the zinc plating seems to resist corrosion better than cheaper bolts I've tried. The partial threads made alignment in the tapped holes much easier than I expected.

Used these to mount a bracket on a CNC machine frame and the hex head held up perfectly under torque. The zinc plating shows no signs of rust after a few weeks of shop use, which is a nice bonus.