براغي رأس مقبس M4-0.7 × 45 مم | رأس زر بمحرك مقبس سداسي | كامل الخيط | سبائك فولاذية درجة 12.9 مطلي بالزنك (400/عبوة)

I was worried about stripping the heads on these small bolts, but the Class 12.9 alloy steel feels incredibly tough and the zinc plating looks clean. They threaded smoothly into my jig without any binding. Exactly what I needed for a tight assembly.

The hex socket drive seated perfectly on my Allen key with zero wobble, and the zinc plating looks clean and uniform across all 400 pieces. Threads cut smoothly into my steel jig plates without binding, so I’ve already burned through half the box on new tooling builds.

I was replacing some worn-out jig fixtures and these 12.9 alloy steel screws felt rock solid when tightening. The 45mm length was perfect for the thicker assembly I was working on.