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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.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $25.99
Typical for this category: the median of 5,493 items is $27.99.

Specifications

Product
Brand nameKlein 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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