براغي رأس كبس M3-0.5 × 45 مم | محرك سداسي | خيط جزئي | فئة 12.9 من سبائك الصلب مطلية بالزنك (200 / عبوة)

Paired these with some 3D printed jig parts I’m building, and the 45mm length was exactly what I needed to get through the thicker sections. The hex socket drive bit into my driver nicely without any stripping—solid little screws for the price.

The hex socket drive took the torque without stripping, and the zinc plating looks uniform across all 200 pieces. I’ve used a dozen on my precision assemblies and not a single one has let go.

These 45mm screws fit my tooling jig perfectly, and the zinc plating looks clean and corrosion-resistant. The hex socket drive didn't strip even under high torque.