براغي ذات رأس أسطواني مقاس 7/8-9 × 8 بوصات | رأس مسطح محرك سداسي | ملولبة جزئيًا | فولاذ سبائكي مؤكسد أسود حراريًا (10 / عبوة)

Had to replace some worn fasteners on a production jig, and these threaded in smoothly with no binding. The black oxide finish seems more consistent than other screws I've tried, and the flat head sits flush without wobbling. Definitely worth the price for a ten-pack.

Used these to secure some jig fixtures on my mill table, and the 8-inch length gave me plenty of bite without bottoming out. The black oxide coating seems to be holding up well against shop grime.

The partially threaded design made alignment in my jig a lot easier than fully threaded bolts, and the black oxide finish has held up well against shop grime so far. Torqued them down with a hex key and they seated flush without any stripping.