مسامير رأس سداسي ثقيل 5/8-11 × 3-3/4 بوصة | ASTM A193 B7 فولاذ سبائك عادي | خيط جزئي (25/عبوة)

I needed some heavy-duty bolts for a press frame, and these 3-3/4" screws threaded in smoothly with no binding. The B7 alloy steel feels solid compared to the standard hardware I was using before.

Threaded all the way up to the head on these, which made installation into a tight flange a lot easier than expected. The heavy hex head gave my wrench a solid grip without any slipping.

Needed a few of these for a heavy-duty press frame repair, and the threading was clean right out of the box. They tightened down evenly without binding, which made assembly a lot smoother than some other bolts I've used.