براغي ذات رأس مقبس M4-0.7 × 35 مم | محرك سداسي | ملولبة جزئيًا | سبيكة فولاذ من الفئة 8.8 مطلية بالزنك (600 / عبوة)

The zinc plating on these M4 screws looks clean and uniform, and the partially threaded design works perfectly for my jig assembly. The threads held tight without stripping during install on my tooling setup.

The partially threaded design on these M4 screws made alignment in my jig much easier than fully threaded bolts. The zinc plating looks consistent across all 600 pieces, and they fit perfectly into the hex socket driver without any stripping.

The partially threaded design worked perfectly for my jig build where I needed some smooth shank above the threads. All 600 arrived in good shape, though a couple of the hex sockets had a bit of zinc residue inside that I had to clear out with a pick.