Croc-Jaw Copper Ground Clamps – 200, 300 & 500 Amp (Select Clamp Size From Options Above)

Heavy-duty copper welding ground clamps designed for maximum workpiece contact and dependable current transfer.
Croc-Jaw Ground Clamps feature high-copper-alloy upper and lower jaws with large serrated contact surfaces that provide a strong bite on the workpiece. Unlike ground clamps that use steel jaws, both jaws on these Lenco clamps are made from high-copper alloy for excellent electrical conductivity.

Choose from 200 Amp, 300 Amp, or 500 Amp models based on your welding amperage, cable size, and required jaw opening.

Available Ground Clamps

Select the ground clamp that matches your required amperage and welding cable size from the options above.

Key Features

• High-Copper-Alloy Jaws: Both upper and lower jaws are made from high-copper alloy for excellent current-carrying capability.
• No Steel Jaws: Current is carried through conductive copper-alloy jaws rather than steel contact surfaces.
• Large Contact Area: Croc-Jaw design provides extensive contact with the workpiece.
• Serrated Upper & Lower Jaws: Aggressive contact surfaces provide a secure bite on the workpiece.
• Heavy-Duty Spring: Enclosed spring provides strong clamping pressure.
• Insulated Spring Area: Top and bottom insulation helps protect the spring and extend service life.
• Brass Hinge Pin: Durable brass hinge allows both jaws to carry welding current.
• Oval-Point Screw Connection: Provides a strong, straightforward welding cable connection without requiring shim stock or a pressure plate.
• Three Amperage Options: Choose from 200A, 300A, or 500A models.
• Made in the USA.

High-Copper-Alloy Contact Jaws

The upper and lower jaws are manufactured from high-copper alloy to provide excellent current-carrying capability. Both jaws participate in the electrical connection, creating a large conductive contact area between the welding ground and workpiece.

The serrated jaw surfaces help the clamp securely grip the workpiece while maintaining strong electrical contact.

Choose the Right Croc-Jaw Clamp

Oval-Point Screw Cable Connection

Each Croc-Jaw Ground Clamp uses an oval-point screw cable connection. The design provides a strong mechanical connection between the welding cable and clamp without requiring shim stock or a separate pressure plate.

Choose the appropriate clamp model for the welding cable size being installed.

Complete Specifications

Common Applications

• Welding ground leads
• Fabrication tables
• Structural steel
• Pipe and tubing
• Plate and sheet fabrication
• Production welding
• Industrial fabrication
• Maintenance and repair
• Shop and field welding

Frequently Asked Questions

What is the difference between the three Croc-Jaw clamps?
The primary differences are amperage rating, welding cable capacity, jaw opening, and overall size. Choose between 200A, 300A, and 500A models based on your welding setup.

Which model accepts #4 through 1/0 cable?
The LEN-LPG-200 accepts #4 through 1/0 (25–50mm²) welding cable.

Which model accepts 1/0 through 2/0 cable?
The LEN-LPG-300 accepts 1/0 through 2/0 (50–70mm²) welding cable.

Which model accepts 3/0 through 4/0 cable?
The LEN-LPG-500 accepts 3/0 through 4/0 (70–95mm²) welding cable.

What are the jaws made from?
Both the upper and lower jaws are made from high-copper alloy. No steel jaws are used.

Why are both jaws conductive?
The brass hinge design allows both high-copper-alloy jaws to carry current, increasing the conductive contact area with the workpiece.

How does the welding cable attach?
Each model uses an oval-point screw cable connection. No shim stock or pressure plate is required.

What are the maximum jaw openings?
The 200A model opens to 1", the 300A model to 1 1/2", and the 500A model to 2".

Where are Lenco Croc-Jaw Ground Clamps made?
They are made in the USA.