FEX-440 | مسامير تثبيت ذاتية الإغلاق من نوع PEM #4-40 | فولاذ (50 / عبوة)

Installed a batch of these into 0.060" aluminum brackets today, and they seated perfectly without any distortion. The steel threads cut cleanly, and the clinching ring held tight on the first try. Exactly what I needed for mounting small PCB brackets.

Put these into a few aluminum panels today and they pressed in firmly with no deformation. The steel feels sturdy enough for repeated assembly cycles, and the #4-40 threads were clean and consistent across all fifty pieces.

Exactly what I needed for a quick sheet-metal assembly job—the steel studs pressed in cleanly and held tight on the first try. The #4-40 threads matched my nut perfectly, and the 50-count pack means I’ve got spares for the next project.