#5-40 x 3/16" ソケットキャップスクリュー | フラットヘッド六角ソケットドライブ | 全ねじ | 合金鋼 熱処理黒色酸化 (300 / パッケージ)

Used a handful of these to tighten up the jig on my drill press and the hex socket drive grabbed perfectly every time. The alloy steel feels solid, no stripping or rounding off even when torqued down.

The black oxide finish on these #5-40 screws looks great and seems like it’ll hold up well in my jig setup. They thread cleanly into tapped holes without any binding, which is exactly what I needed for precision work.

These little flat heads seat perfectly flush in my jig plate, and the hex drive makes them much easier to tighten than a Phillips. The whole bag of 300 feels solid and consistent across every screw I’ve checked.