براغي رأس كبسولية 1/4-28 × 1-1/8" | رأس مسطح محرك سداسي | كاملة الخيوط | فولاذ سبائكي مع أسود حراري (100 / عبوة)

Needed some flat head screws for a precision tooling fixture, and these fit perfectly with no issues during installation. The black oxide finish looks clean and the hex socket gave a solid grip the whole way in.

The hex socket drive sits perfectly flush, so my fixture plates come together without any binding. All one hundred screws had clean, consistent threads right out of the box, and the thermal black oxide gave them a nice, uniform grip in my tooling jigs.

The black oxide finish on these screws is really uniform and looks great on my jig setup. They threaded smoothly into pre-tapped 1/4-28 holes without any binding, and the hex socket drive held tight without stripping. Exactly what I needed for a precision assembly job.