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Klein Tools carbide hole cutter 1-1/8 inch silver metal cylinder with pilot bit

Klein Tools

Klein Tools 31856 carbide hole cutter 1-1/8 inch

SKU CH-9N3M-N54TR

Cuts quick, precise holes in stainless steel, mild steel, iron, copper and brass sheet up to 3/16-Inch thick with an integrated flange that prevents drilling beyond the sheet metal

  • Cuts quick, precise holes in stainless, mild steel, iron, copper, brass up to 3/16-Inch thick
  • Split point pilot bit prevents walking for accurate starts
  • Integrated flange stops over-drilling into sheet metal
  • Heavy-duty carbide construction delivers long service life
  • Replacement pilot bit 31874 available for continued use

Application & Audience

The Klein Tools 31856 carbide hole cutter produces 1-1/8 inch holes in stainless steel, mild steel, iron, copper and brass sheet up to 3/16 inch thick. It is intended for electricians and sheet-metal fabricators who need precise conduit or pipe openings.

Installation & Common Issues

The split-point pilot bit reduces walking at the start of the cut, while the integrated flange stops the tool from drilling past the workpiece. A worn pilot bit can be replaced with part 31874 to maintain accuracy.

Pre-Purchase Checks

Verify that the material thickness does not exceed the rated limit and that the target conduit or pipe size matches the 3/4 inch specification. Confirm that your drill chuck accepts the cutter shank and that the workspace allows safe operation. California Proposition 65 warnings apply to this product.

Highlights

  • Cuts quick, precise holes in stainless, mild steel, iron, copper, brass up to 3/16-Inch thick
  • Split point pilot bit prevents walking for accurate starts
  • Integrated flange stops over-drilling into sheet metal
  • Heavy-duty carbide construction delivers long service life
  • Replacement pilot bit 31874 available for continued use

Specifications

BrandKlein Tools

Questions about this item

How can I confirm the 31856 cutter is producing clean, accurate holes after I mount it?

Check that the split point pilot bit stays centred without wandering and that the integrated flange stops the cut at the sheet surface, giving a precise hole in stainless steel, mild steel, iron, copper or brass up to 3/16 inch thick.

What comes with the 31856 carbide hole cutter and what must I purchase separately?

The cutter includes the integrated flange and split point pilot bit; a replacement pilot bit 31874 is sold separately when the original wears out.

Which conduit or pipe size does the 1-1/8 inch 31856 cutter match?

This cutter is sized for 3/4 inch conduit and pipe, corresponding to a 1.9 cm diameter.

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