براغي ماكينة #4-40 × 1-3/4" | رأس بان مشقوق | نايلون (300/عبوة)

I needed some non-conductive fasteners for a small electronics project, and these nylon #4-40 screws were exactly the right length at 1-3/4 inches. The pan head seated flush against my enclosure without any cracking, and the slotted drive made them easy to tighten by hand.

Finally, a nylon machine screw that doesn't crack when I seat it properly in my project enclosures. The 1-3/4" length is just right for the tight spots I’m working in.

Used these to fasten some panels on a hobby project where I needed to avoid any metal contact. The nylon material is definitely light enough for small enclosures, and the slotted drive made them easy to hand tighten without slipping.