براغي ذات رأس أسطواني M4-0.7 × 16 مم | رأس زر بمحرك سداسي داخلي | ملولبة بالكامل | فولاذ سبائكي من الفئة 12.9 مطلي بالزنك (600 / عبوة)

The hex socket drive makes fastening them in tight spots on my fixture a breeze, and the zinc plating looks like it’ll hold up well. For jig work, I’ve found the 16mm length is just right for most M4 applications.

I’ve been using these for a jig I’m building and the zinc plating is holding up great against shop grime. The hex sockets are cut clean, so my driver bit hasn’t stripped a single one out of the first 600.

These M4 button heads came in a 600-count box and every single one has a clean hex socket that my Allen key grabs without slipping. The zinc plating gives them a uniform finish that looks decent in the tooling jigs I’ve used them in. Class 12.9 alloy steel feels reassuringly rigid when I torque them