KFE-440-4 | صواميل ذاتية التثبيت PEM #4-40 | فولاذ (100/عبوة)

Installed a batch of these into 16-gauge steel panels for a chassis build and they seated flush without any distortion. The #4-40 threads stayed clean through repeated screw insertions, which is exactly what I needed for the job.

Finally used these on a thin metal bracket where access behind was impossible, and the self-clinching design grabbed perfectly as I tightened the screw. The 100-piece pack is great for small projects, and the steel feels sturdy enough for repeated adjustments.

Installed a few into thin sheet metal to replace stripped threads and they clinched perfectly flush. These #4-40 steel nuts feel solid and hold a bolt securely without spinning. Exactly what I needed for a tight enclosure repair.