400 Series C-Clamp, 0 - 3 in. Opening Capacity, 2-3/8 in. Throat Depth (H403)

Real-world toughness defines with a 2-3/8 in. throat depth and 3,500 lbs of clamping force. This value-oriented clamp brings drop forged steel construction to budget-conscious shops without compromising on core performance. The frame resists bending and cracking under load, and the oscillating head automatically adjusts to uneven or angled workpiece surfaces for consistent pressure distribution. A standard acme thread spindle turns smoothly through the full opening range, providing controlled tightening without sudden slippage. The Columbian Economy line is well suited for general fabrication, maintenance, and assembly where a reliable clamp is needed at a practical price point. With 2-3/8 in. of throat depth, it positions clamping pressure past edges and flanges on common stock sizes used in everyday shop work.