براغي ذات رأس أسطواني 1/2-13 × 9 بوصة | رأس مسطح محرك سداسي | فولاذ سبائكي مع أكسيد أسود حراري (10 / عبوة)

The black oxide finish wiped clean easily and hasn’t shown a speck of rust after a week in my damp shop, which surprised me for the price. Threads seated smoothly into my fixture plate with a standard hex key, and the 9-inch length gave me just enough grip for a deep clamping setup.

Exactly the right length for my jig build, and the hex socket drive made tightening them in tight spots a breeze. The black oxide finish also held up fine against shop grime, no complaints.

The black oxide finish is flawless and has held up well during assembly on a few jigs I’m building. The hex socket drive seated perfectly with my driver, and all ten screws threaded cleanly without any binding.