FH4-440-6 | مسامير تثبيت ذاتية PEM #4-40 | فولاذ (100/عبوة)

Pressed them into some thin steel brackets and they seated cleanly without distorting the metal. The #4-40 threads caught perfectly on the first nut, and a hundred pieces means I won’t run out mid-project.

Installed a handful into 0.06" sheet metal for a jig I was building, and they pressed in cleanly with no deformation. The steel feels sturdy enough for repeated fastening without stripping.

I was worried about getting the thread engagement right, but the #4-40 size paired perfectly with my steel panel. Each stud pressed in without deforming the surrounding metal, saving me time on a tricky assembly.