براغي رأس سداسي ثقيلة 7/8-9 × 5 بوصة | صناعة أمريكية | فولاذ A307 درجة B عادي | خيط جزئي (20/عبوة)

The threading is clean and consistent on every single screw, which made driving them into steel beams a breeze. They feel rock-solid in hand and the plain finish is perfect for my indoor machinery build.

I needed some heavy-duty fasteners for attaching steel brackets to a frame, and the partial threads on these made it easy to get a tight fit without binding. The Grade B steel feels sturdy enough for the job, and the hex heads gave my wrench a solid grip.

Bought these for rebuilding a heavy gate hinge and the partially threaded design grabbed cleanly without needing to pre-tap. The steel feels substantial for the size, shipped straight and not a single one with burred threads.