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The WILTON 41423 is a heavy-duty C-clamp from the 140 Series, designed to hold workpieces securely during fabrication, welding, and assembly operations. It provides a jaw opening range of 0 to 2.5 inches and a throat depth of 1.4375 inches, giving tradespeople the reach and clamping capacity needed for a wide range of structural and mechanical work. Each unit is sold individually and weighs 4.8 pounds, reflecting the solid construction typical of the 140 Series line. This clamp is suited for use by ironworkers, pipefitters, fabricators, and general contractors who need reliable holding force in the shop or field.
The WILTON 41423 fits residential and commercial job site applications where controlled clamping pressure on flat or irregular stock is required. It performs well in metal fabrication shops, plumbing rough-in work, and HVAC sheet metal assembly where a stable, adjustable clamp is a routine part of the workflow. The 2.5-inch jaw opening accommodates a broad range of stock thicknesses, making it a versatile addition to a standard tool kit.
Designed as an OEM-style replacement or direct addition to the WILTON 140 Series C-clamp family, compatible with general-purpose clamping applications across fabrication, plumbing, and mechanical trades.
Inspect the clamp screw and swivel pad for wear before applying load. Tighten the clamp screw by hand until firm contact is made, then apply final pressure with a wrench or handle — avoid over-torquing, which can damage the workpiece or crack the clamp frame. Always position the clamp so the load is centered in the throat to prevent frame distortion. Secure all workpieces before grinding, welding, or cutting operations begin.
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