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Rectangular cobalt tool bit, silver metal, 856 model

Cleveland

Cleveland C44629 Cobalt M42 Rectangular Tool Bit 856 pneumatic accessory

SKU CH-AM3P-K4S1P

Cobalt M42 rectangular lathe tool blank, 3/8 by 5/8 by 4 inches, right and left hand non-beveled

  • Cobalt M42 steel resists wear on hard metals
  • Rectangular 4 in blank fits standard tool holders
  • Right and left hand use adds versatility
  • Non-beveled edge keeps profile sharp for precision
  • CLEVELAND brand trusted for industrial cutting tools

Cleveland Cobalt M42 Rectangular Tool Bit

The Cleveland C44629 Cobalt M42 Rectangular Tool Bit 856 is a lathe tool blank made from cobalt steel for machining applications. It measures 3/8 inch wide by 5/8 inch high by 4 inches long and features a non-beveled, right-and-left-hand design. This accessory is intended for metalworking professionals who need a durable blank for custom tool grinding.

Suited for custom tool grinding on lathes

Machinists and toolmakers who require a cobalt M42 blank for shaping bespoke cutting tools will find this item suitable. The rectangular profile supports both right-hand and left-hand configurations without a factory bevel. Buyers needing a ready-to-use cutting tool with a specific geometry or a different material grade should look at other options.

Cobalt M42 grade material

The single specification that determines fit is the Cobalt M42 material designation, which defines the blank's hardness and wear resistance for high-speed machining. This grade is selected for its ability to withstand heat during heavy cuts on tough alloys. Confirm that your application calls for M42 cobalt before purchasing.

How it compares

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

Price $57.99
Pricier than about 71% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND

Questions about this item

What are the overall dimensions of the Cleveland C44629 Cobalt M42 Rectangular Tool Bit 856?

The blank measures 3/8 in overall width, 5/8 in overall height and 4 in overall length.

How is the Cleveland C44629 Cobalt M42 Rectangular Tool Bit 856 installed in a lathe tool holder?

Clamp the non-beveled rectangular shank squarely in the holder; the step often missed is verifying full contact on all faces before tightening.

When will the Cleveland C44629 Cobalt M42 Rectangular Tool Bit 856 need replacement?

Replace the blank once the Cobalt M42 edge shows visible wear or can no longer hold a sharp profile after regrinding.

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