18 in. Heavy Duty F-Clamp Copper - (4800S-18C)

This heavy-duty model delivers opens 0 to 18 in. with 4,880 lbs. of clamping force and a 7 in. throat depth. Combining heavy-duty clamping power with copper-plated spatter resistance, this F-clamp is engineered for professional welding fabrication where both force and durability matter. At 4,880 lbs., it clamps thick plate, structural steel, and heavy pipe fixtures with authority. The copper-plated spindle and contact surfaces shed weld spatter instead of bonding to it, keeping the clamp functional in high-spatter MIG and stick welding environments. The heavy-duty steel bar resists deflection under sustained loads, and the oversized sliding jaw provides smooth repositioning between weld operations. A robust handle allows positive tightening even while wearing heavy welding gloves, ensuring secure fixturing throughout multi-pass welds.