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Wilton 143C C-clamp, ductile iron frame, black oxide spindle, multicolor finish

Wilton

Wilton 143C C-Clamp 3 in 1,430 lb hand tool

SKU CH-BKH1-BNZPG

Heavy-duty C-clamp with 3 in. maximum opening and 1,430 lb clamping force for secure workholding

  • Product typeClamps
  • Surface finishMulticolor
  • Product weight0.7
  • Exerts 1,430 lb clamping force for secure holding
  • 3 in maximum opening fits larger workpieces
  • 2 in throat depth reaches past edges
  • Ductile iron frame resists cracking under stress
  • Black oxide spindle prevents corrosion and turns smoothly

Wilton 143C C-Clamp 3 in 1,430 lb

The Wilton 143C is a heavy-duty C-clamp designed for secure clamping in workshops and job sites. Its ductile iron body resists cracking under stress while the black oxide spindle provides corrosion resistance and smooth operation. This tool suits metalworking, woodworking and general maintenance tasks requiring strong, reliable holding force.

3 in max opening and 2 in throat depth

The clamp opens to a maximum of 3 inches and reaches 2 inches deep, allowing it to grip larger workpieces with stability. It exerts up to 1,430 lb of clamping pressure for firm holds on thick or dense materials. Capacity runs out when workpieces exceed the 3 inch opening or require deeper reach than the 2 inch throat allows.

Manual screw-driven clamping mechanism

The clamp relies on a hand-turned spindle to generate force, so tightening speed and final pressure depend on operator effort. There is no quick-release or ratchet feature; adjustments are made by rotating the screw directly. This design suits applications where steady, controlled pressure is preferred over rapid cycling.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 70% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameWilton
Product typeClamps
Size & build
Surface finishMulticolor

Questions about this item

Will the 3 in. max opening fit the 2 in. throat depth of my existing Wilton clamp?

The 143C opens to 3 in. and has a 2 in. throat depth, so it can span the same workpiece thickness while reaching as far in as your current clamp.

How do I verify the 1,430 lb clamping force is being applied after setup?

Turn the black oxide spindle until the ductile iron frame feels rigid and the workpiece cannot shift; smooth spindle travel and no frame flex indicate full pressure is engaged.

Does the carded package include the spindle and frame, or must I buy the black oxide spindle separately?

The carded 143C ships as a complete unit with the ductile iron body and black oxide spindle already assembled; no extra parts are required.

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