براغي غطاء مقبس مقاس #3-48 × 7/8 بوصة | رأس مسطح مع محرك سداسي المقبس | خيط جزئي | سبيكة فولاذ معالجة حرارياً بأكسيد أسود (200 / عبوة)

The flat heads sit perfectly flush in my precision assemblies, and the hex socket drive made installs a breeze. For a 200-pack of partially threaded alloy steel screws at this price, the thermal black oxide finish looks consistent across every single one.

I was replacing some jig fixtures and the partially threaded design made alignment much easier. The black oxide finish seems durable and the screws fit perfectly in the hardened steel holes.

The hex socket drive seated perfectly on my driver without any wobble, and the black oxide finish looks sharp against the steel frame I used them on. Threads ran smooth through the tapped holes, no binding or stripping even at torque. These will definitely be my go-to for precision assemblies from n