SO-440-8 | براغي تثبيت ذاتية اللولب من نوع PEM #4-40 | فولاذ (200 / عبوة)

Installed these on a prototype board and the self-clinching action locked them in place perfectly on the first try. The #4-40 threads cut cleanly and the steel feels sturdy enough for repeated mounting.

The steel finish feels properly done, and the threads on all 200 pieces ran clean without any burrs. I've used these to mount two PCB stacks and the clinch held firm through repeated disassembly without loosening. By far the most reliable standoffs I've ordered in this size range.

The clinch action is solid and consistent across all 200 pieces, so they seat flush into the panel without any wobble. Steel build feels sturdy for holding a small PCB at the right height, and the #4-40 threads are clean and uniform throughout. Exactly what I needed for a quick prototype run.