C-Clamp, Cooper , 6 - J.H. Williams

The J.H. Williams CC-406C 6" C-Clamp is a robust, shop-grade tool engineered for demanding automotive, fabrication, and industrial applications. This professional C-clamp is designed for repeatable holding power, ensuring workpieces remain securely fixed during critical operations such as welding, repair, and assembly tasks. Its heavy-duty construction provides controlled clamping pressure, making it an essential tool for professional environments where stability and reliability are paramount.

Key Features

• 6" Nominal Clamping Capacity: This C-clamp accommodates a wide range of workpieces, suitable for securing items from chassis brackets and exhaust hangers to smaller fixtures and subassemblies.
• Heavy-Duty I-Beam Frame: The rigid, I-Beam frame design minimizes flex under load, helping to maintain consistent clamping force even on demanding jobs.
• Precision Acme Thread & Copper-Plated Screw: The Acme-threaded screw provides smooth, predictable tightening and release, facilitating quick setup for repetitive operations. The copper plating resists weld splatter, enhancing durability and ease of use in welding applications.
• Free-Floating Swivel Pad: A free-floating swivel pad helps the clamp to seat properly on irregular or angled surfaces, distributing pressure evenly and reducing the risk of marring finished parts.
• Heat-Treated, Drop-Forged Components: Key stress points on the clamp are drop-forged and heat-treated for maximum strength and enhanced durability, ensuring longevity under frequent, high-torque use in professional shops.

Applications

The CC-406C is well-suited for holding chassis brackets, exhaust components, and suspension tabs during welding, grinding, or drilling on passenger vehicles, light trucks, and fleet equipment. It is also useful for securing sheet metal patches, alignment jigs, and fixture plates during collision repair and custom fabrication. Beyond automotive bays, this C-clamp performs reliably in metal fabrication shops, maintenance departments, and industrial assembly lines, clamping steel, aluminum, or wood components during layout, tack-up, and final assembly.

Specifications

• Manufacturer: J.H. Williams
• Model: CC-406C
• Type: 6" C-Clamp
• Nominal Capacity: Up to 6"
• Throat Depth: 4-1/8 in.
• Weight: 5.01 lb (approximately 4.87 lb to 5.24 lb depending on specific listing)
• Maximum Clamping Pressure: 6900 lb.