براغي رأس أسطواني 1-1/4-12 × 3 بوصة | رأس مسطح سداسي | فولاذ سبائكي مؤكسد حراريًا أسود (5/عبوة)

The hex socket drive seated perfectly in my wrench, and the alloy steel threads cut cleanly into the jig plate without any stripping. These are holding up great under repeated clamping cycles, and the thermal black oxide gave them a nice uniform finish that hasn't flaked off yet.

The black oxide finish on these screws looks great and definitely seems tougher than standard zinc-plated hardware. They threaded cleanly into my jig fixture without any binding, which I really appreciated.

Finally got around to swapping out the old bolts on my jig and these fit perfectly with no play in the threads. The thermal black oxide finish looks great and should resist rust in my shop.