براغي رأس مقبس M4-0.7 × 4 مم | رأس زرية سداسية مقبس | ملولبة بالكامل | درجة 12.9 سبيكة فولاذية مطلية بالزنك (400/عبوة)

These little screws are perfect for precision assemblies - I used them to bolt down some fixture plates and the hex socket drive made it easy to torque them properly without stripping. The zinc plating feels consistent across all 400 pieces, and the class 12.9 hardness gives me confidence they won't

Finally found a vendor who stocks these M4 x 4mm button heads in class 12.9 alloy steel, and the zinc plating looks even better in person than the listing photos. The hex socket drive fits my wrench perfectly without any wobble. These are going to work great for my jig assembly.

Bought these for some jig work and the 12.9 alloy steel feels plenty sturdy for the torque I'm applying. Zinc plating looks even and clean, though I wish they came with a bit more thread relief for tight corners. Still, a solid 400-count box for the price.