براغي رأس أسطوانية 1/4-20 × 5-3/4 بوصة | محرك سداسي | ملولبة جزئيًا | فولاذ سبائكي بأكسيد حراري أسود (50 / عبوة)

I needed some longer screws for a jig I’m building, and these 5-3/4" socket caps with the thermal black oxide finish feel extremely sturdy. The hex drive seats well without stripping, and the partially threaded section made alignment easier than expected.

The partially threaded design made alignment a breeze when I was rebuilding a fixture. These black oxide screws have a solid, grippy hex socket that took an Allen key without stripping.

The partially threaded design made aligning these into my jig frame a lot easier than fully threaded bolts would have. The black oxide finish also held up well against a little splatter from the welder.