#4-40 × 1/2" براغي رأس كبس بمقبس سداسي | مشبك نايلون | كامل الخيط | فولاذ سبائكي أسود حراري (300 / عبوة)

I’m always leery of buying fasteners blind, but these #4-40s are consistent across the whole bag—the hex socket drive is clean and the black oxide finish has a nice, even look. Threaded a few into a jig I’m building and the nylon patch gives them a snug, secure feel once seated.

The hex socket drives on these #4-40 screws engage perfectly with my Allen wrenches, which makes working in tight jig setups much easier. The nylon patch holds them secure during assembly without any slipping. Solid choice for precision tooling work.

The black oxide finish on these #4-40 screws is holding up well against light oil in my jig setup, and the hex drive makes them easy to torque without stripping. Perfect for precision work where I need consistent clamping force.