براغي رأس سداسي ثقيلة 7/8-9 × 4 بوصة | ASTM A193 B7 سبيكة فولاذ عادي | ملولبة جزئيًا (45/عبوة)

The hex heads on these bolts gave my wrench a solid grip without slipping, and the B7 alloy steel feels strong enough for my heavy equipment setup. I used a full package on a conveyor line repair and they cinched down securely with no stripping.

These 7/8-9 bolts threaded in cleanly by hand for the first few turns, which saved me time on a large flange job. The partial threading is just right for clamping thick brackets without shaving material.

Needed heavy-duty fasteners for a press rebuild, and these B7s handled the torque specs without any issue. The hex head took a socket nicely, and the partial threading made alignment easier.